Companies HouseLast updated 5 October 2026
Big Technologies Board Changes: Who Left, Who Joined and When
A chronology of board appointments and departures constructed from Companies House and RNS records. Departure from the board is not, by itself, evidence of misconduct.
5-point summary
- 1.Big Technologies has seen an almost complete turnover of its board.
- 2.Sara Murray was removed as a director on 31 March 2025.
- 3.Ian Johnson was appointed CEO in May 2025 and retired in June 2026.
- 4.Charles Lewinton was appointed Acting CEO in June 2026.
- 5.All dates should be verified against the current Companies House filing.
The table below records directors of Big Technologies plc identified from Companies House and RNS records. Departure from the board is recorded as a factual event and does not, by itself, imply misconduct.
| Name | Role | Appointment | Departure | Source |
|---|---|---|---|---|
| Sara Murray | Founder / CEO | 2017 | 31 March 2025 | Companies House / RNS 0042D |
| Alexander Brennan | Director | Per Companies House record | Where applicable | Companies House |
| Daren Morris | Director | Per Companies House record | Where applicable | Companies House |
| Ian Johnson | CEO (appointed May 2025) | May 2025 | 29 June 2026 | RNS 0990K |
| Charles Lewinton | Acting CEO | 29 June 2026 | Current (verify) | RNS 0990K |
| Camilla Macun | Director | Per Companies House record | Where applicable | Companies House |
| Sangita Shah | Director / Chair | Per Companies House record | Where applicable | Companies House |
| Simon Thomson | Director | Per Companies House record | Where applicable | Companies House |
| Jamie Matheson | Director | Per Companies House record | Where applicable | Companies House |
| Mike Johns | Director | Per Companies House record | Where applicable | Companies House |
Several entries are marked "Per Companies House record" or "Where applicable" and should be verified against the current filing before publication.
Leadership timeline
Founder / CEO
Sara Murray
Dismissed 31 March 2025.
↓ Interim management
CEO (appointed May 2025)
Ian Johnson
Retired 29 June 2026.
↓
Acting CEO
Charles Lewinton
Appointed 29 June 2026. Verify current status from the newest filing.
Sources & documents used in this article
- [1] Companies House — officers for company no. 10791781Read original ↗
- [2] Big Technologies plc, RNS 0042D, 31 March 2025
- [3] Big Technologies plc, RNS 0990K, 29 June 2026
Related investigation pages
Published 2026 · Updated 5 October 2026
Submit a right of reply →