# Isthmus Holdco (UK) Limited

## Details

- **Company number:** [11713902](https://find-and-update.company-information.service.gov.uk/company/11713902)
- **Status:** Active
- **Type:** Private Limited Company
- **Incorporated:** 5 Dec 2018
- **Registered office:** 21 ST JAMES'S SQUARE, LONDON, SW1Y 4JZ
- **Nature of business:** [64209](/sic/64209) Activities of other holding companies n.e.c.
- **Corporate group:** [Cinven Partnership LLP](/group/104230) (157 companies)




## Control

| Name | Nature of control | Notified | Ceased |
|---|---|---|---|
| Mr David Robert Barker | voting-rights-25-to-50-percent | 5 Dec 2018 | 5 Dec 2018 |
| Mr Thomas Railhac | voting-rights-25-to-50-percent | 5 Dec 2018 | 5 Dec 2018 |
| Cinven Limited | right-to-appoint-and-remove-directors | 5 Dec 2018 | 14 Oct 2021 |
| Cinven Partnership Llp | significant-influence-or-control | 14 Oct 2021 | 1 Jul 2025 |
| Cinven Limited | ownership-of-shares-75-to-100-percent, ownership-of-shares-75-to-100-percent-as-firm, voting-rights-75-to-100-percent, voting-rights-75-to-100-percent-as-firm, right-to-appoint-and-remove-directors | 1 Jul 2025 |  |




## Owned by

Isthmus Holdco (UK) Limited → [Cinven Limited](/company/02192937) → [Cinven Group Limited](/company/03092251)



## Controls

- [Redhalo Midco (UK) Limited](/company/11770341) (11770341)




## Companies at the same address

- [Barley (No.1) Limited Partnership](/company/LP022879) (LP022879)
- [Barley Gp](/company/15375344) (15375344)
- [Barley Institutional Co-Invest Limited Partnership](/company/LP023493) (LP023493)
- [C Phoenix Limited Partnership](/company/LP022789) (LP022789)
- [Cinven UK F8 General Partner](/company/14115471) (14115471)
- [Cinven UK F8 Gp Holdco](/company/14078025) (14078025)
- [Cinven UK Sf2 General Partner](/company/15835500) (15835500)
- [Cinven UK Sf2 Gp Holdco](/company/15767352) (15767352)
- [Hnvr UK Guarantee Limited](/company/12544939) (12544939)
- [Redhalo Bidco (UK) Limited](/company/11770531) (11770531)