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Conversion Rate Experts Limited
- Incorporated
- 3 August 2006 (20 years)
- Previously known as
- Implementra Limited (until 14 October 2020)
- Industry
- Information technology consultancy activities (62020)
- Directors
- Martin Jon Stone
- Owned by
- Accounts type
- Audit exemption subsidiary
- Region
- Greater London
- Address
- 60 Great Portland StreetLondonW1W 7RT
Website & contact details
- Website
Filing status
- Accounts due
- 31 October 2027
- Last accounts
- 31 January 2026
- Conf. stmt due
- 15 June 2027
- Last conf. stmt
- 1 June 2026
Officers 4 active
Officer details are public data from the Companies House register.
Director · Appointed 9 January 2026
British
Born August 1982 (44)
Director · Appointed 11 June 2025
British
Born April 1967 (59)
Stone, Martin Jon
Director · Appointed 26 September 2023
British
Born September 1977 (49)
Sanford, Mark John
Secretary · Appointed 30 April 2022
Officer history (7 former)
9 January 2026
9 January 2026
11 June 2025
30 May 2025
26 September 2023
Appointed Stone, Martin Jon as Director
15 September 2023
Resigned Jesson, Ben Anthony John as Director
15 September 2023
Resigned Blanks, Karl Spencer as Director
30 April 2022
Appointed Sanford, Mark John as Secretary
30 April 2022
Resigned Wood, Emma Louise as Secretary
11 December 2020
Appointed Wood, Emma Louise as Secretary
11 December 2020
Resigned Lee Morrison, Nicholas as Secretary
15 July 2020
15 July 2020
Resigned Blanks, Karl Spencer as Secretary
15 July 2020
15 July 2020
Appointed Lee Morrison, Nicholas as Secretary
3 August 2006
Appointed Blanks, Karl Spencer as Secretary
3 August 2006
Appointed Blanks, Karl Spencer as Director
3 August 2006
Appointed Jesson, Ben Anthony John as Director
Ownership 1 active
People and entities with significant control, from the Companies House PSC register
Corporate entity · Notified 20 January 2026
Owns 75–100% of shares
Holds 75–100% of voting rights
Right to appoint and remove directors
Limited By Shares
Reg. no. 03860505
Former controllers (3)
20 January 2026
Ceased Next 15 Group PLC — Owns 75–100% of shares
15 July 2020
Ceased Karl Spencer Blanks — Owns 25–50% of shares
15 July 2020
Ceased Ben Anthony John Jesson — Owns 25–50% of shares
Group structure 31 shown
Ownership group derived from the Companies House PSC register
August.One Communications International Limited Owns 75–100% of shares
Bite Communications Group Limited Owns 75–100% of shares
Studio LA Plage Limited Owns 75–100% of shares
Brandwidth Marketing Limited Owns 75–100% of shares
Cloudfy Limited Owns 75–100% of shares
Conversion Rate Experts Limited This company Owns 75–100% of shares
Cubaka Limited Owns 75–100% of shares
Williams Commerce Holdings Limited Owns 75–100% of shares
Williams Commerce Limited Owns 75–100% of shares
Engine Acquisition Limited Owns 75–100% of shares
The Engine Group Limited Owns 75–100% of shares
Engine People UK Limited Owns 75–100% of shares
Engine Partners UK LLP Holds 25–50% of voting rights
Mach49 Ltd Owns 75–100% of shares
Marker Collective Limited Owns 75–100% of shares
Archetype Agency Limited Owns 75–100% of shares
Outcast London Limited Owns 75–100% of shares
MHP Group Limited Owns 75–100% of shares
Lucas Hood Ltd Owns 75–100% of shares
Tuva Partners Limited Owns 75–100% of shares
Next15 Holdco1 Limited Owns 75–100% of shares
Next15 Holdco2 Limited Owns 75–100% of shares
Next15 Holdco3 Limited Owns 75–100% of shares
Plinc Limited Owns 75–100% of shares
Portfolio T SPV2 Limited Owns 75–100% of shares
Pretzl Group Limited Owns 75–100% of shares
Berne (UK) Limited Owns 75–100% of shares
I T Telemarketing Services Limited Owns 75–100% of shares
The Craft Consulting Limited Owns 75–100% of shares
Publitek Limited Owns 75–100% of shares
Financials
Figures from 2020 accounts. Newer accounts, made up to 31 January 2026, are filed but not read yet. See them on Companies House
- Net Assets
- £5,226,321
- up £1,350,224 (35%)
- Cash
- £5,960,876
- up £1,535,148 (35%)
- Employees
- 8
- down 1 (11%)
- Debt Ratio
- 17%
- Current Ratio
- 5.9x
Balance sheet detail
| 2020 | |
|---|---|
| Fixed Assets | £14,377 |
| Current Assets | £6,286,410 |
| Debtors | £312,189 |
| Cash | £5,960,876 |
| Creditors (< 1 year) | £1,071,734 |
| Net Current Assets | £5,214,676 |
| Net Assets | £5,226,321 |
| Shareholder Funds | £5,226,321 |
Filings
Recent filings only. See the full history on Companies House
| Date | Description | Made Up To | Pages | |
|---|---|---|---|---|
| 7 November 2026 | Audit exemption subsidiary accounts | 31 January 2026 | — | |
| 7 November 2026 | Other filing | — | ||
| 7 November 2026 | Other filing | — | ||
| 7 November 2026 | Accounts filing | — | ||
| 1 June 2026 | Confirmation statement with updates | 1 June 2026 |
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