Turnmill Topco Limited

Active15453860 Private limited company

Incorporated: 30 January 2024 (2 years)
Previously known as: Jadeite Topco Limited (until 10 May 2024)
This list may be incomplete. See all names on Companies House
Industry: Other business support service activities n.e.c. (82990)
Directors: Robert Jan Thompson
Alexander Masaaki Johnson
Simon Kimble
all 5 directors
Owned by: Horizon Capital II GP LLP
Accounts type: Group
Region: Greater London
Address: 32-38 Saffron Hill
London
EC1N 8FH

Filing status

Accounts due: 30 September 2027
Last accounts: 31 December 2025
Conf. stmt due: 12 February 2027
Last conf. stmt: 29 January 2026

Officers 5 active

Officer details are public data from the Companies House register.

Thompson, Robert Jan

Director · Appointed 6 July 2026

Also at GB&M Limited, Turnmill Limited, Gro Events Ltd · more companies

British

Born November 1977

Johnson, Alexander Masaaki

Director · Appointed 19 February 2024

Also at GB&M Limited, Turnmill Limited, Gro Events Ltd · more companies

British

Born January 1979 (47)

Kimble, Simon

Director · Appointed 19 February 2024

British

Born June 1963 (63)

Hickley, Emily

Director · Appointed 30 January 2024

Also at UK Pluto Topco Limited, Reach Topco Limited · more companies

British

Born June 1992 (34)

Lewis, Adam Stephen

Director · Appointed 30 January 2024

Also at Cathedral Topco Limited, Horizon Capital LLP, Project Further Topco Limited · more companies

British

Born January 1982 (44)

Officer history (1 former)

6 July 2026

Appointed Thompson, Robert Jan as Director

6 July 2026

Resigned Levy, Rupert James as Director

19 February 2024

Appointed Johnson, Alexander Masaaki as Director

19 February 2024

Appointed Kimble, Simon as Director

19 February 2024

Appointed Levy, Rupert James as Director

30 January 2024

Appointed Hickley, Emily as Director

30 January 2024

Appointed Lewis, Adam Stephen as Director

Ownership 1 active

People and entities with significant control, from the Companies House PSC register

Horizon Capital II GP LLP

Corporate entity · Notified 30 January 2024

Owns 75–100% of shares

Holds 75–100% of voting rights

Right to appoint and remove directors

Limited Liability Partnership

Reg. no. Oc435542

Group structure 52 shown

Ownership group derived from the Companies House PSC register

Horizon Capital LLP

Horizon Capital (Additional Co-Investment) LP Has significant influence or control

Horizon Capital (Cathedral Cip) GP LLP Right to 75–100% of surplus assets

Horizon Capital (Cip2) GP LLP Right to 75–100% of surplus assets

Horizon Capital (Cip3) GP LLP Right to 75–100% of surplus assets

Horizon Capital (DMC) FP Limited Partnership Has significant influence or control

Horizon Capital (Holdings) Limited Owns 75–100% of shares

Horizon Capital (Founders) Limited Owns 25–50% of shares

Horizon Capital 2013 Cip Limited DissolvedOwns 75–100% of shares

Horizon Capital 2013 General Partner Limited DissolvedOwns 75–100% of shares

Horizon Capital 2018 Cip Limited Partnership Part right to 75–100% of surplus assets

Horizon Capital 2019 Syndication GP LLP Holds 25–50% of voting rights

Horizon Capital Security Trustee Number 2 Limited DissolvedOwns 75–100% of shares

Horizon Capital Security Trustee Number 3 Limited DissolvedOwns 75–100% of shares

LCP 2018 (Cip) GP LLP Holds 75–100% of voting rights

LCP 2018 GP LLP Holds 75–100% of voting rights

Lyceum Capital (DMC) FP General Partner LLP Proposed for strike-offHolds 75–100% of voting rights

Lyceum Capital DMC GP LLP Proposed for strike-offHolds 75–100% of voting rights

Agilico Group Limited Owns 50–75% of shares

Horizon Capital 2013 Cip Limited Partnership Has significant influence or control

Horizon Capital 2013 GP Limited Partnership Has significant influence or control

Mills Co-Investment Carry LP Right to appoint and remove a person

Horizon Capital 2018 Limited Partnership Right to appoint and remove a person

Horizon Capital 2018 SPV Limited Partnership Part right to 75–100% of surplus assets

Juniper Education Group Limited Owns 75–100% of shares

Juniper Education Newco Limited Owns 75–100% of shares

Project Further Topco Limited Owns 50–75% of shares

Project Further Holdco Limited Owns 75–100% of shares

Topsource Worldwide Topco Limited Holds 50–75% of voting rights

Topsource Worldwide Holdco Limited Owns 75–100% of shares

Horizon Capital 2019 Syndication Carry LP Has significant influence or control

Horizon Capital Cathedral Cip Limited Partnership Has significant influence or control

Horizon Capital Cathedral GP LLP Holds 25–50% of voting rights

Cathedral Topco Limited Owns 75–100% of shares

Ignis Topco Limited Owns 75–100% of shares

Horizon Capital II Cip Limited Partnership Has significant influence or control

Horizon Capital II GP LLP Right to 75–100% of surplus assets

Alamo Topco Limited In liquidationOwns 75–100% of shares

Alamo Holdco Limited DissolvedOwns 75–100% of shares

Elixir Topco Limited Owns 50–75% of shares

Elixir Holdco Limited Owns 75–100% of shares

Independence Topco Limited Holds 75–100% of voting rights

Independence Holdco Limited Owns 75–100% of shares

Rise Topco Limited Owns 50–75% of shares

Rise Holdco Limited Owns 75–100% of shares

Simba Topco Limited Holds 25–50% of voting rights

Simba Holdco Limited Owns 75–100% of shares

Turnmill Topco Limited This company Owns 75–100% of shares

Turnmill Holdco Limited Owns 75–100% of shares

Westgate Topco Limited Status not confirmedOwns 25–50% of shares

Westgate Holdco Limited Status not confirmedOwns 75–100% of shares

Horizon Capital Iii Cip Limited Partnership Has significant influence or control

And 7 more

Financials

Balance sheet as at 31 December 2025 · group accounts

Net Assets: £1,092,543
Profit: (£90,417)

Return on Equity: -8%

Trend

Net Assets

Balance sheet detail

	2025	2024
Debtors	£16,826,696	£14,976,570
Creditors (< 1 year)	£3,755,835	£1,815,292
Creditors (> 1 year)	£11,978,319
Net Current Assets	£13,070,861	£13,161,278
Net Assets	£1,092,543	£1,182,960
Shareholder Funds	£1,092,543	£1,182,960