EUROREGISTRY
GB · Company with significant control
3i Infrastructure Plc
3i Infrastructure Plc is recorded as a controlling entity on the Companies House register of people with significant control for 13 UK companies.
Register details
Facts
- Name on the register
- 3i Infrastructure Plc
- Type
- Corporate entity
- Registration number
- 95682
- Registered in
- Jersey
- Significant control now
- 13 UK companies
- Earlier significant control
- 8 UK companies
- First notified
- 6 April 2016
- Source
- Companies House register of people with significant control, 20 September 2026
At a glance
3i Infrastructure Plc's companies
- 3i Infrastructure Plc holds 75% or more of the shares in 8 of the 13 companies listed below.
- Main lines of business: activities of other holding companies n.e.c. (7), activities of financial services holding companies (3) and financial intermediation not elsewhere classified (1).
- Registered offices in London (8), Leeds (4) and Northampton (1).
- The companies were incorporated between 2014 and 2026.
- 5 of the companies also list other people or companies with significant control.
These details come from the register as published on 20 September 2026. The register can change at any time: check the current entry live before relying on it.
Companies
Significant control now
UK companies that list 3i Infrastructure Plc as a company with significant control, with the nature of that control as registered.
| Company | Status | Incorporated | Town | Business | Nature of control | Since |
|---|---|---|---|---|---|---|
| 3IN MIA II HOLDCO LIMITED 17283829 · Private Limited Company | Active | 18 June 2026 | London | Fund management activities | Owns more than 50% but less than 75% of the shares; Holds 75% or more of the voting rights; Can appoint or remove a majority of the board of directors | 18 June 2026 |
| 3I OYSTERCATCHER HOLDCO LIMITED 16216863 · Private Limited Company | Active | 29 January 2025 | London | Activities of financial services holding companies | Owns 75% or more of the shares; Holds 75% or more of the voting rights; Can appoint or remove a majority of the board of directors | 29 January 2025 |
| GREEN GAS HOLDCO 1 LIMITED 15971979 · Private Limited Company | Active | 23 September 2024 | London | Activities of financial services holding companies | Owns 75% or more of the shares; Holds 75% or more of the voting rights; Can appoint or remove a majority of the board of directors | 23 September 2024 |
| 3I AMALTHEA TOPCO LIMITED 13767597 · Private Limited Company | Active | 26 November 2021 | London | Activities of financial services holding companies | Owns 75% or more of the shares; Holds 75% or more of the voting rights; Can appoint or remove a majority of the board of directors | 26 November 2021 |
| GCX TOPCO LIMITED 13728021 · Private Limited Company | Active | 8 November 2021 | London | Activities of other holding companies n.e.c. | Owns 75% or more of the shares; Holds 75% or more of the voting rights; Can appoint or remove a majority of the board of directors | 8 November 2021 |
| 3I TAMPNET HOLDINGS LIMITED 11909513 · Private Limited Company | Active | 27 March 2019 | London | Activities of other holding companies n.e.c. | Owns 75% or more of the shares; Holds 75% or more of the voting rights; Can appoint or remove a majority of the board of directors | 27 March 2019 |
| COLOMBO INVESTMENT HOLDINGS LIMITED 11909540 · Private Limited Company | Active | 27 March 2019 | Leeds | Activities of other holding companies n.e.c. | Has significant influence or control | 27 March 2019 |
| TAMPNET UK LIMITED 08979990 · Private Limited Company | Active | 4 April 2014 | Leeds | Other telecommunications activities | Has significant influence or control | 14 March 2019 |
| COLOMBO BIDCO LIMITED 11471545 · Private Limited Company | Active | 18 July 2018 | Leeds | Activities of other holding companies n.e.c. | Owns 75% or more of the shares | 13 March 2019 |
| COLOMBO HOLDCO LIMITED 11471094 · Private Limited Company | Active | 18 July 2018 | Leeds | Activities of other holding companies n.e.c. | Has significant influence or control | 13 March 2019 |
| COLOMBO TOPCO LIMITED 11470771 · Private Limited Company | Active | 18 July 2018 | London | Activities of other holding companies n.e.c. | Has significant influence or control | 18 July 2018 |
| INFINIS ENERGY GROUP HOLDINGS LIMITED 10432005 · Private Limited Company | Active | 17 October 2016 | Northampton | Activities of other holding companies n.e.c. | Owns 75% or more of the shares; Holds 75% or more of the voting rights; Can appoint or remove a majority of the board of directors | 17 October 2016 |
| OYSTERCATCHER HOLDCO LIMITED 09278215 · Private Limited Company | Active | 23 October 2014 | London | Financial intermediation not elsewhere classified | Owns 75% or more of the shares; Holds 75% or more of the voting rights; Can appoint or remove a majority of the board of directors | 6 April 2016 |
History
Earlier significant control
Companies where 3i Infrastructure Plc was registered as having significant control, and no longer is.
| Company | Nature of control | From | Until |
|---|---|---|---|
| OYSTERCATCHER HOLDINGS LIMITED 16216759 · Private Limited Company | Owns 75% or more of the shares; Holds 75% or more of the voting rights; Can appoint or remove a majority of the board of directors | 29 January 2025 | 12 February 2025 |
| FUTURE BIOGAS HOLDCO LIMITED 14624714 · Private Limited Company | Owns 75% or more of the shares; Holds 75% or more of the voting rights; Can appoint or remove a majority of the board of directors | 30 January 2023 | 27 September 2024 |
| OCTAGON HEALTHCARE GROUP LIMITED 04826487 · Private Limited Company | Owns more than 25% but not more than 50% of the shares; Holds more than 25% but not more than 50% of the voting rights | 29 March 2019 | 20 December 2019 |
| MERSEY GATEWAY INVESTMENTS LIMITED 08950875 · Private Limited Company | Owns more than 25% but not more than 50% of the shares; Holds more than 25% but not more than 50% of the voting rights | 11 April 2016 | 18 February 2020 |
| C3 INVESTMENTS IN AYRSHIRE COLLEGE EDUCATION HOLDCO LIMITED SC473666 · Private Limited Company | Owns 75% or more of the shares; Holds 75% or more of the voting rights; Can appoint or remove a majority of the board of directors | 6 April 2016 | 3 January 2020 |
| CROSS LONDON TRAINS HOLDCO 2 LIMITED 07813037 · Private Limited Company | Owns more than 25% but not more than 50% of the shares | 6 April 2016 | 13 March 2019 |
| ELGIN INFRASTRUCTURE LIMITED SC366432 · Private Limited Company | Owns more than 25% but not more than 50% of the shares; Holds more than 25% but not more than 50% of the voting rights | 6 April 2016 | 3 January 2020 |
| WODS TRANSMISSION HOLDCO LTD 09308464 · Private Limited Company | Owns more than 25% but not more than 50% of the shares; Holds more than 25% but not more than 50% of the voting rights | 6 April 2016 | 3 January 2020 |
Connections
Others with significant control of these companies
- 3i Investments PlcCOLOMBO INVESTMENT HOLDINGS LIMITED
- Colombo Topco LimitedCOLOMBO INVESTMENT HOLDINGS LIMITED
- Colombo Bidco LimitedTAMPNET UK LIMITED
- Colombo Holdco LimitedCOLOMBO BIDCO LIMITED
- Colombo Investment Holdings LimitedCOLOMBO HOLDCO LIMITED
- 3i Tampnet Holdings LimitedCOLOMBO TOPCO LIMITED
Explained
What significant control means
Every UK company must keep a register of the people with significant control over it and file it with Companies House. Someone has significant control if they own more than 25% of the shares or voting rights, can appoint or remove a majority of the board, or otherwise have significant influence or control. Companies can also be controlled through another company, which then appears on the register itself.
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