Filing status
- Accounts due
- 31 December 2026
- Last accounts
- 31 March 2025
- Conf. stmt due
- 2 November 2027
- Last conf. stmt
- 19 October 2026
Oyster Therapeutics Ltd
- Incorporated
- 20 October 2020 (6 years)
- Previously known as
- Kesmalea Therapeutics Limited (until 10 November 2026)
- Industry
- Research and experimental development on biotechnology (72110)
- Directors
- Timothy Piers Clackson
- Owned by
- Syncona Limited
- Accounts type
- Small
- Region
- Greater London
- Address
- Cannon Place78 Cannon StreetLondonEC4N 6AF
Charges
- Total
- 2
- Outstanding
- 1
- Part satisfied
- 0
- Satisfied
- 1
Officers 6 active
Officer details are public data from the Companies House register.
Director · Appointed 19 October 2026
British
Born July 1986 (40)
British
Born October 1991 (35)
Clackson, Timothy Piers, Dr
Director · Appointed 9 May 2025
American,British
Born June 1965 (61)
Director · Appointed 4 November 2024
Also at Foothold International Limited · more companies
British
Born December 1976 (49)
Dix, Clive
Director · Appointed 7 September 2022
British
Born August 1954 (72)
Director · Appointed 7 September 2022
Also at Re-Aim Therapeutics Ltd · more companies
British
Born November 1975
Officer history (7 former)
19 October 2026
19 October 2026
Resigned Molumby, Stephen as Director
19 October 2026
6 May 2026
6 May 2026
Appointed Molumby, Stephen as Director
6 May 2026
6 November 2025
9 May 2025
Appointed Clackson, Timothy Piers, Dr as Director
1 April 2025
4 November 2024
4 October 2024
30 May 2024
19 April 2024
Resigned Weir, Malcolm as Director
25 March 2024
Resigned Kennedy, Madeleine Elizabeth as Secretary
7 September 2022
Appointed Weir, Malcolm as Director
7 September 2022
7 September 2022
7 September 2022
Appointed Dix, Clive as Director
1 September 2022
Appointed Kennedy, Madeleine Elizabeth as Secretary
20 October 2020
Ownership 1 active
People and entities with significant control, from the Companies House PSC register
Syncona Limited
Corporate entity · Notified 8 September 2022
Owns 50–75% of shares
Holds 50–75% of voting rights
Company Limited By Shares
Reg. no. 55514
Former controllers (1)
8 September 2022
Financials
Figures from 2022 accounts. Newer accounts, made up to 31 March 2025, are filed but not read yet. See them on Companies House
- Net Assets
- £1,400
- down £3,600 (72%)
Trend
Net Assets
Balance sheet detail
| 2022 | 2021 | |
|---|---|---|
| Fixed Assets | £5,106 | |
| Current Assets | £5,000 | |
| Creditors (< 1 year) | £3,706 | |
| Net Current Assets | (£3,706) | £5,000 |
| Net Assets | £1,400 | £5,000 |
| Shareholder Funds | £1,400 | £5,000 |
Filings
Recent filings only. See the full history on Companies House
| Date | Description | Made Up To | Pages | |
|---|---|---|---|---|
| 10 November 2026 | Certificate of change of name | |||
| 9 November 2026 | Memorandum and Articles of Association | — | ||
| 9 November 2026 | Change of share class name or designation | — | ||
| 9 November 2026 | Particulars of variation of rights attached to shares | — | ||
| 9 November 2026 | Resolutions | — |
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