Filing status
- Accounts due
- 30 June 2027
- Last accounts
- 30 September 2025
- Conf. stmt due
- 29 December 2026
- Last conf. stmt
- 15 December 2025
Isthmus Holdco (UK) Limited
- Incorporated
- 5 December 2018 (7 years)
- Industry
- Activities of other holding companies n.e.c. (64209)
- Owned by
- Accounts type
- Full
- Region
- Greater London
- Address
- 21 St James's SquareLondonSW1Y 4JZ
Charges
- Total
- 1
- Outstanding
- 1
- Part satisfied
- 0
- Satisfied
- 0
Officers 3 active
Officer details are public data from the Companies House register.
Director · Appointed 26 January 2021
German
Born March 1993 (33)
Director · Appointed 18 February 2019
Italian
Born July 1991 (35)
Director · Appointed 5 December 2018
French
Born May 1980 (46)
Officer history (4 former)
22 March 2023
22 March 2023
26 January 2021
31 December 2020
28 April 2020
18 February 2019
18 February 2019
18 February 2019
18 February 2019
5 December 2018
5 December 2018
Ownership 1 active
People and entities with significant control, from the Companies House PSC register
Corporate entity · Notified 1 July 2025
Owns 75–100% of shares
Owns 75–100% of shares (as a firm)
Holds 75–100% of voting rights
Holds 75–100% of voting rights (as a firm)
Right to appoint and remove directors
Limited By Shares
Reg. no. 2192937
Former controllers (4)
1 July 2025
Ceased Cinven Partnership LLP — Has significant influence or control
14 October 2021
Ceased Cinven Limited — Right to appoint and remove directors
5 December 2018
5 December 2018
Group structure 41 shown
Ownership group derived from the Companies House PSC register
Barley Co-Invest LP Part right to 25–50% of surplus assets
Cinven Beaverbrook Limited Owns 75–100% of shares
Cinven Holdings Limited Owns 75–100% of shares
Barentz Aggregator LP Part right to 75–100% of surplus assets
Barley Midco Limited Owns 75–100% of shares
Cinven International Limited Holds 75–100% of voting rights
Cinven Services Limited Owns 75–100% of shares
Cinven Foundation Owns 75–100% of shares
Cinven Partnership Services Limited Owns 75–100% of shares
Cinven Services (LP No 2) Limited Owns 75–100% of shares
Cip (Barley) Holdings Limited Owns 75–100% of shares
Cip (SF2) Holdings Limited Owns 75–100% of shares
Cinven SF2 Co-Investment Limited Partnership Part right to 25–50% of surplus assets
Cip (Viii) Holdings Limited Owns 75–100% of shares
Cinven Eight Co-Investment Limited Partnership Part right to 50–75% of surplus assets
SP Holdings (Barley) Limited Owns 75–100% of shares
SP Holdings (SF2) Limited Owns 75–100% of shares
SP Holdings (Viii) Limited Owns 75–100% of shares
Cinven Limited Owns 75–100% of shares
Amperio Topco Limited Owns 25–50% of shares
Green UK Holdco Limited Owns 75–100% of shares
Barley Aggregator LP Has significant influence or control
Barley Carry LP Has significant influence or control
Cevine Capital Management (SP SF2 Scotland) Limited Partnership Has significant influence or control
Cevine Capital Management (SP Viii Scotland) Limited Partnership Has significant influence or control
Cinarancia UK Bidco Limited Has significant influence or control
Master Builders Solutions UK Limited Owns 75–100% of shares
Cinven Capital Management (CPS) Limited Partnership Has significant influence or control
Cinven Capital Management (IV) Limited Partnership Has significant influence or control
Cinven Capital Management (RP) Limited Partnership Has significant influence or control
Maven Colmore (Willenhall) LLP Holds 75–100% of voting rights
Cinven Capital Management (SP IV) Limited Partnership Has significant influence or control
Cinven Capital Management (SP SF2 Scotland) Limited Partnership Has significant influence or control
Cinven Capital Management (SP Viii Scotland) Limited Partnership Has significant influence or control
Cinven Capital Management (TF No.1) Limited Partnership Has significant influence or control
Cinven Capital Management (TF No.2) Limited Partnership Has significant influence or control
Cinven Capital Management (TF No.3) Limited Partnership Has significant influence or control
Isthmus Holdco (UK) Limited This company Owns 75–100% of shares
Redhalo Midco (UK) Limited Owns 75–100% of shares
Cinven Partners LLP Holds 25–50% of voting rights
Filings 54
| Date | Description | Made Up To | Pages | |
|---|---|---|---|---|
| 10 April 2026 | Full accounts | 30 September 2025 | ||
| 15 December 2025 | Confirmation statement with no updates | 15 December 2025 | ||
| 30 September 2025 | Cessation of a person with significant control | |||
| 30 September 2025 | Notification of a person with significant control | |||
| 27 May 2025 | Full accounts | 30 September 2024 |
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