Filing status
- Accounts due
- 31 December 2026
- Last accounts
- 31 December 2024
- Conf. stmt due
- 13 December 2026
- Last conf. stmt
- 29 November 2025
Ironstone Life Science Holdings Limited
- Incorporated
- 12 May 2021 (5 years)
- Previously known as
- Ironstone Oxford Limited (until 30 June 2021)This list may be incomplete. See all names on Companies House
- Industry
- Activities of other holding companies n.e.c. (64209)
- Owned by
- Accounts type
- Audit exemption subsidiary
- Region
- Greater London
- Address
- 20 Triton StreetLondonNW1 3BF
Charges
- Total
- 2
- Outstanding
- 0
- Part satisfied
- 0
- Satisfied
- 2
Officers 5 active
Officer details are public data from the Companies House register.
British Land Company Secretarial Limited
Corporate Secretary · Appointed 17 October 2026
Director · Appointed 20 April 2026
British
Born February 1990 (36)
Director · Appointed 20 April 2026
British
Born January 1967 (59)
Director · Appointed 20 April 2026
British
Born March 1980 (46)
Director · Appointed 20 April 2026
British
Born February 1988 (38)
Officer history (5 former)
17 October 2026
Appointed British Land Company Secretarial Limited as Corporate Secretary
20 April 2026
20 April 2026
20 April 2026
20 April 2026
20 April 2026
20 April 2026
20 April 2026
1 February 2022
1 February 2022
21 December 2021
21 December 2021
Resigned Hope, Simon as Director
25 November 2021
12 May 2021
12 May 2021
Appointed Hope, Simon as Director
Ownership 1 active
People and entities with significant control, from the Companies House PSC register
Corporate entity · Notified 26 November 2021
Owns 75–100% of shares
Holds 75–100% of voting rights
Right to appoint and remove directors
Private Limited Company
Reg. no. 13532483
Holdings 5
Companies where Ironstone Life Science Holdings Limited is registered as a person with significant control
Owns 75–100% of shares
Active
Owns 75–100% of shares
Active
Owns 75–100% of shares
Active
Owns 75–100% of shares
Active
Owns 75–100% of shares
Active
Former controllers (1)
26 November 2021
Ceased Simon Hope — Owns 50–75% of shares
Group structure 60 shown
Ownership group derived from the Companies House PSC register
BL Bluebutton 2023 Limited Has significant influence or control
Bluebutton Properties UK Limited Owns 25–50% of shares
B.L.C.T. (12717) Limited Owns more than 25% of shares
B.L.C.T. (12723) Limited Owns more than 25% of shares
B.L.C.T. (12727) Limited Owns more than 25% of shares
B.L.C.T. (PHC 1) Limited Owns more than 25% of shares
B.L.C.T. (PHC 15B) Limited Owns more than 25% of shares
B.L.C.T. (PHC 15C) Limited Owns more than 25% of shares
Bluebutton Developer (1As) Limited Has significant influence or control
Bluebutton Developer (2FA) Limited Owns 25–50% of shares
Bluebutton Developer Company (2012) Limited Owns 75–100% of shares
Broadgate (PHC 15B) Limited Owns 25–50% of shares
Broadgate (PHC 15C) Limited Owns 25–50% of shares
Broadgate Eldon Properties Limited Owns 75–100% of shares
Broadgate Management (Bishopsgate) Limited Owns 75–100% of shares
Exchange Square Management Limited Owns 25–50% of shares
PHC 2 Parent Limited Owns 75–100% of shares
BL Davidson Limited Owns 75–100% of shares
BLD Property Holdings Limited Owns 75–100% of shares
Mercari Holdings Limited Owns 75–100% of shares
Salmax Properties Owns 75–100% of shares
BL Intermediate Holding Company Limited Owns 75–100% of shares
BL CW Residential Holdings Limited Owns 75–100% of shares
BL CW Trading GP Company Limited Owns 25–50% of shares
BL CW GP Holding Company Limited Owns 75–100% of shares
BL CW Minority Unitholder Company Limited Owns 75–100% of shares
BL CW Upper GP Company Limited Owns 25–50% of shares
BL CW Developments Limited Owns 75–100% of shares
BL CW Holdings Limited Owns 75–100% of shares
BL CW Upper LP Company Limited Owns 75–100% of shares
BL Leisure and Industrial Holding Company Limited Owns 75–100% of shares
BL Logistics Investment 2 Limited Owns 75–100% of shares
BL Logistics Investment 3 Limited Owns 75–100% of shares
BL Logistics Investment Limited Owns 75–100% of shares
British Land Industrial Limited Owns 75–100% of shares
Broadgate Court Investments Limited Owns 75–100% of shares
BL Office Holding Company Limited Owns 75–100% of shares
BL Euston Tower Holding Company Limited Owns 75–100% of shares
BL Residual Holding Company Limited Owns 75–100% of shares
18-20 Craven Hill Gardens Limited Owns 75–100% of shares
B.L.Holdings Limited Owns 75–100% of shares
BLSSP (PHC 5) Limited Owns 75–100% of shares
Piccadilly Residential Limited Holds 75–100% of voting rights
Power Court GP Limited Owns 75–100% of shares
Seymour Street Homes Limited Owns 75–100% of shares
Topside Street Limited Owns 75–100% of shares
BL Shoreditch Development Limited Owns 75–100% of shares
Boldswitch Limited Owns 75–100% of shares
British Land Company Secretarial Limited Owns 75–100% of shares
British Land Properties Limited Owns 75–100% of shares
Broadgate Estates Limited Owns 75–100% of shares
Life Science Reit Limited Owns 75–100% of shares
Ironstone Life Science Holdings Limited This company Owns 75–100% of shares
Oxford Technology Park Holdings Limited Owns 75–100% of shares
London and Henley Holdings Limited Owns 75–100% of shares
London and Henley (UK) Limited Owns 75–100% of shares
Regis Property Holdings Limited Owns 75–100% of shares
United Kingdom Property Company Limited Owns 75–100% of shares
Filings
Recent filings only. See the full history on Companies House
| Date | Description | Made Up To | Pages | |
|---|---|---|---|---|
| 26 October 2026 | Appointment of a secretary | |||
| 14 August 2026 | Director's details changed | |||
| 14 August 2026 | Change of details for a person with significant control | |||
| 13 August 2026 | Director's details changed | |||
| 13 August 2026 | Director's details changed |
Some other companies at this address
Other companies in this industry
Chigwell
Carnforth
Bristol
By trade and location
Explore the largest companies
Need accounts figures, ownership or websites for thousands of companies? Bulk data & API →