# Mrs Deborah June Calder

## Details

- **Born:** 9/1948
- **Nationality:** British
- **Appointments:** 0 (0 active)
- **Control:** 2 holdings



## Control

| Company | Nature of control | Notified | Ceased |
|---|---|---|---|
| [Cambridge Cryogenics Limited](/company/08541476) | ownership-of-shares-25-to-50-percent | 1 Mar 2026 |  |
| [Quantum Materials](/company/08692352) | ownership-of-shares-25-to-50-percent | 1 Mar 2026 |  |