Website & contact details
- Website
Osler Diagnostics Limited
- Incorporated
- 11 February 2016 (10 years)
- Previously known as
- Oxford Impedance Diagnostics Limited (until 5 September 2017)
- Industry
- Research and experimental development on biotechnology (72110)
- Directors
- John Joseph Sperzel IIILouise Anna WarmeRoland Diggelmann
- Accounts type
- Full
- Region
- South East
- Address
- King Charles HousePark End StreetOxfordOX1 1JD
Filing status
- Accounts due
- 30 September 2027
- Last accounts
- 31 December 2025
- Conf. stmt due
- 24 February 2027
- Last conf. stmt
- 10 February 2026
Officers 9 active
Officer details are public data from the Companies House register.
Sperzel Iii, John Joseph
Director · Appointed 21 January 2026
American
Born May 1963 (63)
Warme, Louise Anna
Director · Appointed 17 December 2024
Swedish
Born February 1983 (43)
Diggelmann, Roland
Director · Appointed 31 July 2023
Swiss
Born April 1967 (59)
Director · Appointed 9 June 2022
Also at Lind Investment Management LLP · more companies
British
Born February 1966 (60)
Berry, David Arthur
Director · Appointed 1 February 2022
American
Born February 1978 (48)
American
Born November 1961
Director · Appointed 4 March 2019
British
Born January 1981 (45)
Campbell, Connor
Director · Appointed 26 July 2017
British
Born September 1994 (32)
Director · Appointed 26 July 2017
South African
Born March 1971 (55)
Officer history (12 former)
21 January 2026
Appointed Sperzel Iii, John Joseph as Director
17 December 2024
Resigned Olsen, Mark as Director
17 December 2024
Appointed Warme, Louise Anna as Director
31 July 2023
Appointed Diggelmann, Roland as Director
31 May 2023
8 November 2022
Resigned Reinhardt, Erich Rolf, Professor Doctor as Director
8 November 2022
Resigned Debatin, Jorg as Director
8 November 2022
Resigned George, Peter Lutz as Director
8 November 2022
Appointed Olsen, Mark as Director
29 June 2022
Appointed George, Peter Lutz as Director
9 June 2022
Resigned George, Peter Lutz as Director
9 June 2022
15 February 2022
1 February 2022
Appointed Berry, David Arthur as Director
29 April 2021
Appointed Debatin, Jorg as Director
20 July 2020
20 July 2020
31 January 2020
Appointed George, Peter Lutz as Director
25 January 2020
Resigned Davis, Jason, Professor as Director
31 December 2019
4 March 2019
3 January 2019
3 January 2019
1 October 2018
Appointed Reinhardt, Erich Rolf, Professor Doctor as Director
26 July 2017
26 July 2017
Appointed Campbell, Connor as Director
6 April 2017
21 June 2016
21 June 2016
21 June 2016
21 June 2016
Appointed Davis, Jason, Professor as Director
21 June 2016
11 February 2016
Ownership 1 active
People and entities with significant control, from the Companies House PSC register
Corporate entity · Notified 31 March 2025
Owns 25–50% of shares
Holds 25–50% of voting rights
Limited By Shares
Reg. no. 16279473
Former controllers (1)
31 March 2025
Ceased Oxford Science Enterprises PLC — Owns 25–50% of shares
Financials
Figures from 2020 accounts. Newer accounts, made up to 31 December 2025, are filed but not read yet. See them on Companies House
- Net Assets
- £39,714,000
- up £18,359,000 (86%)
- Cash
- £30,962,000
- up £21,500,000 (227%)
- Profit Before Tax
- (£21,369,000)
- down £8,977,000 (72%)
- Employees
- 76
- up 32 (73%)
- Debt Ratio
- 5%
- Current Ratio
- 28.5x
- Return on Equity
- -44%
Balance sheet detail
| 2020 | |
|---|---|
| Fixed Assets | £4,375,000 |
| Current Assets | £37,257,000 |
| Cash | £30,962,000 |
| Creditors (< 1 year) | £1,307,000 |
| Net Current Assets | £35,950,000 |
| Net Assets | £39,714,000 |
| Shareholder Funds | £39,714,000 |
Filings 103
| Date | Description | Made Up To | Pages | |
|---|---|---|---|---|
| 7 October 2026 | Full accounts | 31 December 2025 | ||
| 2 October 2026 | Statement of capital following an allotment of shares | |||
| 30 July 2026 | Other filing | |||
| 15 July 2026 | Statement of capital following an allotment of shares | |||
| 28 May 2026 | Other filing |
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