| 1 | Practice Plus Group Holdings Limited Other human health activities Turnover £0 | £139.9M 2019 accounts | £0 |
| 2 | Snap-On Business Solutions Limited Other information technology service activities Turnover £37.8M | £115.6M 2020 accounts | £37.8M |
| 3 | Bigchange Midco Limited Activities of other holding companies n.e.c. | £112.3M 2023 accounts | — |
| 4 | Bigchange Bidco Limited Activities of other holding companies n.e.c. | £107.4M 2023 accounts | — |
| 5 | Culligan Shared Services (UK) Limited Activities of other holding companies n.e.c. | £94.8M 2021 accounts | — |
| 6 | Iqvia Laboratories Discovery UK Ltd Research and experimental development on biotechnology Turnover £104.5M | £61.5M | £104.5M |
| 7 | Dominus St. Pauls Hotel Limited Other letting and operating of own or leased real estate Turnover £12.6M | £57.3M 2024 accounts | £12.6M |
| 8 | Wipro Holdings (UK) Limited Other business support service activities n.e.c. Turnover £16.4M | £53.4M 2022 accounts | £16.4M |
| 9 | Enghouse Interactive (UK) Limited Other information technology service activities Turnover £23.8M | £47.0M 2019 accounts | £23.8M |
| 10 | Assa Abloy Global Solutions UK Limited Security systems service activities Turnover £61.7M | £43.7M 2024 accounts | £61.7M |
| 11 | Practice Plus Group Health and Rehabilitation Services Limited Other human health activities Turnover £136.1M | £24.8M 2019 accounts | £136.1M |
| 12 | Eden Automotive Limited Sale of new cars and light motor vehicles Turnover £180.1M | £20.8M 2020 accounts | £180.1M |
| 13 | Dominus Bath Hotel Limited Hotels and similar accommodation Turnover £8.1M | £20.5M 2024 accounts | £8.1M |
| 14 | Lister Wilder Limited Other retail sale not in stores, stalls or markets Turnover £82.5M | £16.6M 2024 accounts | £82.5M |
| 15 | Workfront, Ltd. Business and domestic software development Turnover £16.7M | £14.7M 2024 accounts | £16.7M |
| 16 | Access Limited Other manufacturing n.e.c. | £13.6M 2024 accounts | — |
| 17 | Timeline Television Limited Television programming and broadcasting activities | £13.0M 2024 accounts | — |
| 18 | Dataline Software Limited Information technology consultancy activities | £12.9M 2019 accounts | — |
| 19 | Ecapital 3415 Limited Activities of financial services holding companies Turnover £58.5k | £12.3M | £58.5k |
| 20 | Rabbits Vehicle Hire Limited Renting and leasing of cars and light motor vehicles | £12.1M | — |
| 21 | Pentax U.K. Limited Manufacture of medical and dental instruments and supplies Turnover £20.7M | £11.7M | £20.7M |
| 22 | Hope and Clay (Construction) Limited Construction of roads and motorways | £10.4M | — |
| 23 | Calcot Services for Children Limited Other business support service activities n.e.c. Turnover £5.7M | £10.3M | £5.7M |
| 24 | Ergea Healthcare Limited Hospital activities Turnover £16.4M | £9.7M 2023 accounts | £16.4M |
| 25 | Ceuta Healthcare Limited Other human health activities | £8.0M | — |
| 26 | Aerotech, Limited Manufacture of electric motors, generators and transformers Turnover £17.2M | £7.0M 2024 accounts | £17.2M |
| 27 | Claude Fenton (Plant Hire) Limited Other specialised construction activities n.e.c. Turnover £5.9M | £6.9M | £5.9M |
| 28 | Kingsclere Nurseries Limited Pre-primary education Turnover £6.4M | £6.9M 2024 accounts | £6.4M |
| 29 | Pharmareview Limited Other professional, scientific and technical activities n.e.c. Turnover £10.5M | £6.8M 2024 accounts | £10.5M |
| 30 | I.P. Integration Limited Other telecommunications activities Turnover £39.7M | £6.5M | £39.7M |
| 31 | Select Contracts UK Limited Renting and leasing of cars and light motor vehicles Turnover £25.1M | £6.5M 2022 accounts | £25.1M |
| 32 | Harvey Water Softeners Limited Manufacture of other special-purpose machinery n.e.c. Turnover £48.3M | £6.4M 2023 accounts | £48.3M |
| 33 | Profixed Interiors Limited Other specialised construction activities n.e.c. Turnover £22.1M | £6.2M | £22.1M |
| 34 | Sunpower Group Holdings Limited Non-specialised wholesale trade Turnover £13.2M | £6.1M 2024 accounts | £13.2M |
| 35 | Barracuda Networks Limited Other information technology service activities Turnover £28.3M | £5.8M | £28.3M |
| 36 | Static Control Components (Europe) Limited Wholesale of other intermediate products | £5.7M 2024 accounts | — |
| 37 | Active-Pcb Solutions Limited Manufacture of other electrical equipment Turnover £30.5M | £5.6M 2023 accounts | £30.5M |
| 38 | Coffey Geotechnics Limited Engineering related scientific and technical consulting activities Turnover £7.2M | £5.3M 2024 accounts | £7.2M |
| 39 | Motor Design Limited Other information technology service activities | £5.0M | — |
| 40 | Automation Consultants Limited Business and domestic software development | £4.3M | — |
| 41 | Dorsey Construction Materials Ltd Agents involved in the sale of timber and building materials | £3.6M 2021 accounts | — |
| 42 | Dominus Dixon Hotel Limited Development of building projects Turnover £15.9M | £3.4M | £15.9M |
| 43 | BMC UK Subadvisor Support Limited Activities of venture and development capital companies | £3.4M | — |
| 44 | Swiftpak Ltd Packaging activities Turnover £13.2M | £3.3M 2022 accounts | £13.2M |
| 45 | Omnia Outsourcing Limited Combined office administrative service activities | £3.1M | — |
| 46 | Moog Reading Limited Manufacture of other electronic and electric wires and cables | £2.9M | — |
| 47 | Intellectual Capital Resources Limited Other activities of employment placement agencies Turnover £23.4M | £2.8M | £23.4M |
| 48 | Oxford Conversis Limited Translation and interpretation activities | £2.8M 2024 accounts | — |
| 49 | Black Box Network Services (UK) Limited Other information technology service activities Turnover £7.4M | £2.6M | £7.4M |
| 50 | Higher Concept Software Limited Business and domestic software development Turnover £6.6M | £2.5M | £6.6M |
| 51 | Azego TS Limited Other information technology service activities Turnover £11.2M | £2.5M 2024 accounts | £11.2M |
| 52 | Claude Fenton,limited Development of building projects Turnover £23.8k | £2.4M | £23.8k |
| 53 | FSP Consulting Services Limited Business and domestic software development | £2.4M 2019 accounts | — |
| 54 | Outco Bidco Limited Activities of other holding companies n.e.c. | £2.2M | — |
| 55 | Coeo Limited Business and domestic software development | £2.1M 2022 accounts | — |
| 56 | Practice Plus Group Urgent Care Holdings Limited Activities of head offices Turnover £0 | £2.1M 2019 accounts | £0 |
| 57 | FRV Powertek Limited Production of electricity | £2.1M | — |
| 58 | Radware (UK) Limited Information technology consultancy activities | £2.1M 2024 accounts | — |
| 59 | Practice Plus Group Primary Care Limited Specialists medical practice activities Turnover £10.1M | £2.1M 2019 accounts | £10.1M |
| 60 | Arculus Limited Information technology consultancy activities | £2.0M 2023 accounts | — |
| 61 | Solutions 4 Health Ltd Other human health activities Turnover £15.9M | £1.9M | £15.9M |
| 62 | Componentsource Limited Wholesale of computers, computer peripheral equipment and software Turnover £35.2M | £1.9M 2024 accounts | £35.2M |
| 63 | BCL Timber Projects Limited Other specialised construction activities n.e.c. | £1.7M | — |
| 64 | Teneo Limited Information technology consultancy activities Turnover £12.6M | £1.6M 2024 accounts | £12.6M |
| 65 | Whitechurch Asset Management Limited Activities auxiliary to financial intermediation n.e.c. | £1.5M 2024 accounts | — |
| 66 | Simpro Software Ltd. Other business support service activities n.e.c. | £1.3M 2021 accounts | — |
| 67 | Wipro Connected Services UK Limited Information technology consultancy activities | £1.3M | — |
| 68 | Synergix Logistics Solutions Limited Freight transport by road Turnover £19.3M | £1.2M 2023 accounts | £19.3M |
| 69 | FSP Holdings Limited Business and domestic software development | £1.1M 2019 accounts | — |
| 70 | FRV Services Energy UK Limited Production of electricity Turnover £478.9k | £932.2k | £478.9k |
| 71 | Alan Hadley Limited Treatment and disposal of non-hazardous waste Turnover £6.3M | £860.8k | £6.3M |
| 72 | Equivo Limited Activities of collection agencies | £842.5k | — |
| 73 | Just After Midnight Ltd Other information technology service activities | £784.1k 2020 accounts | — |
| 74 | Stibo Systems Limited Information technology consultancy activities Turnover £14.5M | £761.8k | £14.5M |
| 75 | Enghouse Interactive Holdings (UK) Limited Other information technology service activities Turnover £0 | £603.4k 2019 accounts | £0 |
| 76 | Bennett Hay Limited Combined facilities support activities | £516.1k | — |
| 77 | Chelmsford Administration Ltd Activities auxiliary to financial intermediation n.e.c. | £506.9k 2024 accounts | — |
| 78 | Berkshire Youth Ltd Sports and recreation education | £424.8k 2021 accounts | — |
| 79 | Sse Battery Monk Fryston Limited Other professional, scientific and technical activities n.e.c. | £372.0k 2021 accounts | — |
| 80 | FRV Tyler Hill Bess 1 Limited Production of electricity | £172.9k | — |
| 81 | Arculus Cyber Security Limited Information technology consultancy activities | £130.9k 2023 accounts | — |
| 82 | Cde Entertainment Ltd. Publishing of computer games Turnover £65.5k | £112.2k 2024 accounts | £65.5k |
| 83 | Acia Aero Leasing (UK) Limited Activities of other holding companies n.e.c. Turnover £80.3k | £95.7k 2022 accounts | £80.3k |
| 84 | Pixology Ltd Ready-made interactive leisure and entertainment software development | £59.3k 2019 accounts | — |
| 85 | Bauwatch (UK) Limited Agents specialized in the sale of other particular products | £55.1k 2019 accounts | — |
| 86 | Aspentech Ltd. Information technology consultancy activities | £30.1k 2019 accounts | — |
| 87 | Tetra Tech International Development Projects Limited Activities of head offices | £14.0k | — |
| 88 | Sse Battery Salisbury Limited Other letting and operating of own or leased real estate | £10.6k 2021 accounts | — |
| 89 | Landsource Limited Management of real estate on a fee or contract basis | -£40.8k 2024 accounts | — |
| 90 | Practice Plus Group Pharmacy Services Limited Non-trading company Turnover £6.8M | -£698.0k 2019 accounts | £6.8M |
| 91 | MHP Consulting UK Limited Information technology consultancy activities Turnover £2.6M | -£993.9k 2019 accounts | £2.6M |
| 92 | On Direct Business Services Limited Other business support service activities n.e.c. | -£3.9M | — |
| 93 | Epg Communication Holdings Limited Other business support service activities n.e.c. Turnover £3.2M | -£5.0M 2024 accounts | £3.2M |
| 94 | Practice Plus Group Urgent Care Limited General medical practice activities Turnover £77.3M | -£10.6M 2019 accounts | £77.3M |
| 95 | Mypos Merchant Services (UK) Limited Renting and leasing of office machinery and equipment (including computers) | -£26.1M 2023 accounts | — |
| 96 | Edgewing Systems Limited Manufacture of air and spacecraft and related machinery | — | — |
| 97 | Typhon Bidco Limited Activities of other holding companies n.e.c. | — | — |
| 98 | Applied VWS Limited Manufacture of electronic measuring, testing etc. equipment, not for industrial process control | — | — |
| 99 | Also UK Holdings Limited Activities of other holding companies n.e.c. | — | — |
| 100 | Thames Water Super Senior Issuer PLC Financial intermediation not elsewhere classified | — | — |
| 101 | Surge Holdco Ltd Activities of financial services holding companies | — | — |
| 102 | Indigo Meters Limited Renting and leasing of other machinery, equipment and tangible goods n.e.c. | — | — |
| 103 | Its (Enterprises) Ltd Activities of other holding companies n.e.c. | — | — |
| 104 | Centrum Care Homes Group Limited Residential nursing care facilities | — | — |
| 105 | Sunrise UK Leasing Limited Renting and leasing of air passenger transport equipment | — | — |
| 106 | Proventeq Holdings Limited Activities of other holding companies n.e.c. | — | — |
| 107 | WSH Events Limited Activities of other holding companies n.e.c. | — | — |
| 108 | Hemani Topco Ventures Ltd Activities of head offices | — | — |
| 109 | AP Investments Iii Ltd Other business support service activities n.e.c. | — | — |
| 110 | Tirante Bidco Limited Activities of financial services holding companies | — | — |
| 111 | Open Text UK Investments Global Limited Activities of other holding companies n.e.c. | — | — |
| 112 | Eastern Green Link 3 Limited Other business support service activities n.e.c. | — | — |
| 113 | Walker Group Limited Activities of other holding companies n.e.c. | — | — |
| 114 | Walton Topco Limited Activities of other holding companies n.e.c. | — | — |
| 115 | Synergix Holdings Limited Activities of other holding companies n.e.c. | — | — |
| 116 | Indigo Water Limited Water collection, treatment and supply | — | — |
| 117 | AL Investment Management Holdings Limited Activities of other holding companies n.e.c. | — | — |
| 118 | Ensco 1520 Limited Non-trading company | — 2024 accounts | — |
| 119 | Thales UK Finance & Investment Limited Activities of other holding companies n.e.c. | — | — |
| 120 | Object First UK Limited Wholesale of computers, computer peripheral equipment and software | — | — |
| 121 | Vmed O2 UK Holdco 5 Limited Activities of other holding companies n.e.c. | — | — |
| 122 | R1val Fitness Group Limited Fitness facilities | — 2024 accounts | — |
| 123 | Enviromena Limited Fund management activities | — | — |
| 124 | Granstone Holdco Limited Dormant Company | — | — |
| 125 | Eastern Green Link 2 Limited Other business support service activities n.e.c. | — | — |
| 126 | Vidett Limited Activities of other holding companies n.e.c. | — | — |
| 127 | Open Text UK Investments International Limited Activities of other holding companies n.e.c. | — | — |
| 128 | Open Text UK Investments Limited Activities of other holding companies n.e.c. | — | — |
| 129 | Open Text UK Investments International Holdings Limited Activities of other holding companies n.e.c. | — | — |
| 130 | Open Text UK Investments Global Holdings Limited Activities of other holding companies n.e.c. | — | — |
| 131 | Unity Bidco Limited Activities of other holding companies n.e.c. | — | — |
| 132 | Unity Midco Limited Activities of other holding companies n.e.c. | — | — |
| 133 | Unity Noteco Limited Activities of other holding companies n.e.c. | — | — |
| 134 | Unity Topco Limited Activities of other holding companies n.e.c. | — | — |
| 135 | Sse Fiddlers Ferry Battery Limited Production of electricity | — | — |
| 136 | Sse Ferrybridge Battery Limited Production of electricity | — | — |
| 137 | Azego Group Holdings Limited Activities of other holding companies n.e.c. | — 2024 accounts | — |
| 138 | Acia Aero Leasing North Sea Limited Renting and leasing of air passenger transport equipment | — | — |
| 139 | WSH Retail Limited Activities of other holding companies n.e.c. | — | — |
| 140 | Open Text UK Holding Limited Activities of other holding companies n.e.c. | — | — |
| 141 | First Healthcare Holdings Limited Residential care activities for learning difficulties, mental health and substance abuse | — 2023 accounts | — |
| 142 | Norwegian Log Holdco Limited Activities of other holding companies n.e.c. | — 2024 accounts | — |
| 143 | WSH Europe Limited Activities of other holding companies n.e.c. | — | — |
| 144 | Eflow Topco Limited Other information technology service activities | — 2024 accounts | — |
| 145 | Ergea Group UK Limited Hospital activities | — | — |
| 146 | Parsyl Limited Activities of insurance agents and brokers | — | — |
| 147 | JNTL (UK) Holdco Limited Activities of other holding companies n.e.c. | — | — |
| 148 | Smart CT 789 Limited Activities of other holding companies n.e.c. | — | — |
| 149 | Smart CT 123 Limited Activities of other holding companies n.e.c. | — | — |
| 150 | Smart CT 456 Limited Activities of other holding companies n.e.c. | — | — |
| 151 | Berwick Bank B Limited Production of electricity | — | — |
| 152 | Silicon Frontline Technology (UK) Limited Business and domestic software development | — 2022 accounts | — |
| 153 | Daisy Bidco Limited Activities of other holding companies n.e.c. | — | — |
| 154 | Resultscx UK Limited Management consultancy activities other than financial management | — | — |
| 155 | Cheadle Capital Management Services Limited Activities of other holding companies n.e.c. | — | — |
| 156 | Atlantic Green UK Limited Production of electricity | — 2024 accounts | — |
| 157 | Icon Clinical Research Holdings (U.K.) Limited Activities of other holding companies n.e.c. | — | — |
| 158 | Welwing Capital Management (UK) LLP | — 2024 accounts | — |
| 159 | Diameter Capital (UK) Limited Activities of other holding companies n.e.c. | — | — |
| 160 | Gateway Financial Holdings Limited Hotels and similar accommodation | — 2024 accounts | — |
| 161 | Gateway Investments Holdings Limited Hotels and similar accommodation | — 2024 accounts | — |
| 162 | Iqvia Finance Ltd. Activities of other holding companies n.e.c. | — | — |
| 163 | Montachem International UK Limited Wholesale of chemical products | — | — |
| 164 | Lee Marley Group Holding Limited Activities of other holding companies n.e.c. | — 2022 accounts | — |
| 165 | R&S Energy Limited Production of electricity | — 2024 accounts | — |
| 166 | Seon Holdings Ltd. Business and domestic software development | — 2021 accounts | — |
| 167 | Select Vehicle Group Holdings Limited Activities of other holding companies n.e.c. | — 2022 accounts | — |
| 168 | South Clyde Energy Recovery Holdings Limited Activities of other holding companies n.e.c. | — | — |
| 169 | Osmosis Funding Limited Activities of other holding companies n.e.c. | — | — |
| 170 | Zirconia Trading Limited Buying and selling of own real estate | — | — |
| 171 | Zirconia Holding Limited Buying and selling of own real estate | — | — |
| 172 | Quanesco Topco Limited Activities of other holding companies n.e.c. | — | — |
| 173 | Osmosis Buyer Limited Activities of other holding companies n.e.c. | — | — |
| 174 | Osmosis Topco Limited Activities of other holding companies n.e.c. | — | — |
| 175 | Schrödinger Technologies Limited Business and domestic software development | — | — |
| 176 | Elwood Technologies Services Limited Business and domestic software development | — | — |
| 177 | C & S Energy Limited Trade of electricity | — 2024 accounts | — |
| 178 | Bridewell Bidco Limited Activities of other holding companies n.e.c. | — | — |
| 179 | Bridewell Group Limited Activities of other holding companies n.e.c. | — | — |
| 180 | Bridewell Group Holdings Limited Activities of other holding companies n.e.c. | — | — |
| 181 | Elwood Technologies LLP | — | — |
| 182 | Dominvs Hammersmith Hotel 9 Limited Development of building projects Turnover £59.7M | — | £59.7M |
| 183 | Willow Pbsa Holding Limited Activities of other holding companies n.e.c. | — | — |
| 184 | Bigchange Topco Limited Activities of other holding companies n.e.c. | — 2023 accounts | — |
| 185 | Lids Holdings UK Limited Retail sale of clothing in specialised stores | — | — |
| 186 | Aqs Student Property Limited Other letting and operating of own or leased real estate | — | — |
| 187 | Concorde Topco Limited Non-trading company | — | — |
| 188 | Jadecal Holdings Ltd Activities of other holding companies n.e.c. | — 2024 accounts | — |
| 189 | Diamond (KH) UK Assetco Limited Activities of other holding companies n.e.c. | — | — |
| 190 | Vmed O2 UK Holdings Limited Activities of head offices | — | — |
| 191 | Oracle Technology Research Holdings Limited Other information technology service activities | — | — |
| 192 | Bletchley Bidco Limited Activities of other holding companies n.e.c. | — | — |
| 193 | Bletchley Midco Limited Activities of other holding companies n.e.c. | — | — |
| 194 | Bletchley Topco Limited Activities of other holding companies n.e.c. | — | — |
| 195 | VS UK Holdings 2 Limited Business and domestic software development | — | — |
| 196 | FSP Corporate Limited Business and domestic software development | — | — |
| 197 | VS UK Holdings 1 Limited Business and domestic software development | — | — |
| 198 | Dawcul Holdings Limited Activities of other holding companies n.e.c. | — 2024 accounts | — |
| 199 | Ciphr Holdings Limited Activities of head offices | — | — |
| 200 | Opella Healthcare UK Limited Wholesale of pharmaceutical goods | — | — |
| 201 | Campfire Equipment Rentals Limited Financial leasing | — | — |
| 202 | Castrol Holdings Americas Limited Activities of other holding companies n.e.c. | — | — |
| 203 | Castrol Holdings International Limited Activities of other holding companies n.e.c. | — | — |
| 204 | Vmed O2 UK Holdco 4 Limited Activities of other holding companies n.e.c. | — | — |
| 205 | Vmed O2 UK Financing II Limited Activities of head offices | — | — |
| 206 | Vmed O2 UK Financing I PLC Activities of head offices | — | — |
| 207 | Versuni UK Limited Manufacture of other plastic products | — | — |
| 208 | Sse Thermal Energy Operations Limited Production of electricity | — | — |
| 209 | Vmed O2 UK Limited Activities of head offices | — | — |
| 210 | Seagreen 1A Limited Production of electricity | — | — |
| 211 | Detroit UK International LLP | — | — |
| 212 | Sse Slough Multifuel Holdco Limited Production of electricity | — | — |
| 213 | Automation Consultants Holdings Limited Activities of other holding companies n.e.c. | — | — |
| 214 | HP UK Development Limited Manufacture of computers and peripheral equipment | — | — |
| 215 | Davidson Kempner Hawthorne Partners Ltd. Other business support service activities n.e.c. | — | — |
| 216 | Yell Holdco Limited Activities of other holding companies n.e.c. | — | — |
| 217 | Cambridge Garage Motor Holdings Limited Activities of other holding companies n.e.c. | — 2023 accounts | — |
| 218 | Husp Limited Management consultancy activities other than financial management | — | — |
| 219 | Bronte Industries, Ltd Activities of other holding companies n.e.c. | — | — |
| 220 | Reading Industries, Ltd Activities of other holding companies n.e.c. | — | — |
| 221 | Amci Ridley Holdings Ltd Activities of other holding companies n.e.c. | — | — |
| 222 | Practice Plus Group Bidco Limited Activities of other holding companies n.e.c. | — | — |
| 223 | Practice Plus Group Midco 1 Limited Activities of other holding companies n.e.c. | — | — |
| 224 | Practice Plus Group Midco 2 Limited Activities of other holding companies n.e.c. | — | — |
| 225 | Practice Plus Group Topco Limited Activities of other holding companies n.e.c. | — | — |
| 226 | Indigo Power Limited Distribution of electricity | — | — |
| 227 | Enviromena International Holdings Limited Activities of construction holding companies | — 2020 accounts | — |
| 228 | Rarebreed Holdings Limited Licensed restaurants | — | — |
| 229 | Wipro It Services UK Societas Activities of other holding companies n.e.c. | — | — |
| 230 | Ecapital Commercial Finance Holdings UK Limited Activities of other holding companies n.e.c. | — | — |
| 231 | Enstco 22 Limited Activities of other holding companies n.e.c. | — | — |
| 232 | OP Group Holdings Ltd Activities of other holding companies n.e.c. | — | — |
| 233 | Amagi Media Private Ltd Television programme production activities | — | — |
| 234 | Daisy Communications Holdings Limited Activities of other holding companies n.e.c. | — | — |
| 235 | Micro Focus Software (IP) Holdings Limited Other information technology service activities | — | — |
| 236 | CD&R and WSH Jvco (UK) Limited Activities of other holding companies n.e.c. | — | — |
| 237 | CD&R and WSH Limited Activities of other holding companies n.e.c. | — | — |
| 238 | WSH Services Holding Limited Activities of other holding companies n.e.c. | — | — |
| 239 | Esr UK Asset Management Limited Fund management activities | — | — |
| 240 | Outco Holdings Limited Activities of other holding companies n.e.c. | — | — |
| 241 | Dimensions Personalised Support Limited Residential care activities for learning difficulties, mental health and substance abuse | — | — |
| 242 | Azura Partners Ltd Activities of financial services holding companies | — | — |
| 243 | Oxford Immune Algorithmics Ltd Wholesale of computers, computer peripheral equipment and software | — 2024 accounts | — |
| 244 | Linksys UK Limited Wireless telecommunications activities | — | — |
| 245 | South West Larder Limited Licensed restaurants | — 2020 accounts | — |
| 246 | Buccaneer Holdco Limited Activities of other holding companies n.e.c. | — | — |
| 247 | Blue Holdco Limited Activities of other holding companies n.e.c. | — | — |
| 248 | Flying Wild Hog Development Limited Other business support service activities n.e.c. | — | — |
| 249 | Vmans Limited Activities of other holding companies n.e.c. | — | — |
| 250 | Brighter Futures for Children Limited General public administration activities | — | — |
| 251 | Infocare Healthcare Services (UK) Limited Other information technology service activities | — | — |
| 252 | Micro Focus Integration Limited Other information technology service activities | — | — |
| 253 | Vonnco Limited Activities of other holding companies n.e.c. | — | — |
| 254 | Sse Slough Multifuel Limited Production of electricity | — | — |
| 255 | Yell Bondco PLC Non-trading company | — | — |
| 256 | Algolia Limited Information technology consultancy activities | — | — |
| 257 | Brevan Howard Asset Management Services Limited Activities of other holding companies n.e.c. | — | — |
| 258 | Explore123 Limited Activities of other holding companies n.e.c. | — | — |
| 259 | AI Aqua Zip UK Limited Activities of other holding companies n.e.c. | — | — |
| 260 | Bridewell Consulting Limited Management consultancy activities other than financial management | — | — |
| 261 | Anthracite Holdings Ltd Activities of other holding companies n.e.c. | — | — |
| 262 | Doggerbank Offshore Wind Farm Project 1 Holdco Limited Production of electricity | — | — |
| 263 | Doggerbank Offshore Wind Farm Project 2 Holdco Limited Production of electricity | — | — |
| 264 | Doggerbank Offshore Wind Farm Project 3 Holdco Limited Production of electricity | — | — |
| 265 | Micro Focus Midco Holdings Limited Other information technology service activities | — | — |
| 266 | 4Com Group Limited Other telecommunications activities | — | — |
| 267 | The Keys Academy Trust Pre-primary education | — | — |
| 268 | Oxford Quantum Circuits Limited Other professional, scientific and technical activities n.e.c. | — | — |
| 269 | Cloudfactory Holdings Limited Activities of other holding companies n.e.c. | — | — |
| 270 | Green Gas Oxon Limited Manufacture of gas | — | — |
| 271 | Kandy Therapeutics Limited Research and experimental development on biotechnology | — | — |
| 272 | Micro Focus Foreign Holdco Ltd Other information technology service activities | — | — |
| 273 | Workiva Holdings Limited Activities of other holding companies n.e.c. | — | — |
| 274 | CPL Topco Limited Activities of other holding companies n.e.c. | — | — |
| 275 | Pso (Manila) Limited Combined office administrative service activities | — | — |
| 276 | Atlas Infrastructure Partners (UK) Ltd Fund management activities | — | — |
| 277 | On Direct Group Limited Activities of other holding companies n.e.c. | — | — |
| 278 | Iqvia Investment Holdings Limited Other business support service activities n.e.c. | — | — |
| 279 | Micro Focus Situla Holding Ltd Other information technology service activities | — | — |
| 280 | Westbury Street Holdings Limited Activities of other holding companies n.e.c. | — | — |
| 281 | VS International Holdings Limited Other software publishing | — | — |
| 282 | Survival of the Fittest Limited Activities of other holding companies n.e.c. | — 2024 accounts | — |
| 283 | Fitzroy QLD Resources Limited Deep coal mines | — | — |
| 284 | Imp Logistics UK Limited Other professional, scientific and technical activities n.e.c. | — | — |
| 285 | Sycomp UK Limited Information technology consultancy activities | — | — |
| 286 | Virgin Media Senior Investments Limited Activities of other holding companies n.e.c. | — | — |
| 287 | Fortum Glasgow Limited Production of electricity | — | — |
| 288 | Micro Focus Software UK Ltd Other information technology service activities | — | — |
| 289 | Verizon UK Financing Limited Other service activities n.e.c. | — | — |
| 290 | Cloudfactory International Limited Data processing, hosting and related activities | — | — |
| 291 | Novus Aviation Capital (UK) Limited Other business support service activities n.e.c. | — | — |
| 292 | Axis Spine Technologies Ltd Other research and experimental development on natural sciences and engineering | — 2022 accounts | — |
| 293 | Dimensions Somerset Sev Limited Residential care activities for learning difficulties, mental health and substance abuse | — | — |
| 294 | Waylands Automotive Limited Sale of new cars and light motor vehicles | — | — |
| 295 | Ecapital 3414 Limited Activities of financial services holding companies | — | — |
| 296 | Daedalus Acquisitions Limited Production of electricity | — | — |
| 297 | Thinkproject UK Holdings Limited Activities of other holding companies n.e.c. | — | — |
| 298 | Ciphr Group Limited Activities of head offices | — | — |
| 299 | Bmi Group Holdings UK Limited Activities of head offices | — | — |
| 300 | Micro Focus CHC Limited Other information technology service activities | — | — |