# DURHAM MAGNETO OPTICS LTD (04492798)

> DURHAM MAGNETO OPTICS LTD is an active private limited company (company number 04492798) incorporated on 23 July 2002, registered in Cambridge. Its registered activity is other manufacturing n.e.c. (SIC 32990). Latest small accounts cover the period ending 30 June 2025, showing net assets of £5.82m and cash of £3.88m, with 18 employees on average. Net assets rose 3% on the prior period (£5.63m).

- Status: Active
- Incorporated: 2002-07-23
- Registered office: Cambridge, CB23 2RF
- SIC 32990: Other manufacturing n.e.c.
- Next accounts due: 2027-03-30
- Confirmation statement due: 2027-08-06
- Accounts type: TOTAL EXEMPTION FULL

By net assets it sits in the top quarter of 110 comparable companies in Cambridge (median £18k, upper quartile £455k).

## Accounts (as filed)

| Period end | Net assets | Cash | Debtors | Creditors <1y | Turnover | Profit | Employees |
|---|---|---|---|---|---|---|---|
| 2025-06-30 | £5.82m | £3.88m | — | £566k | — | — | 18 |
| 2024-06-30 | £5.63m | £3.19m | — | £472k | — | — | 15 |

current ratio 10.74; size band small.

## Filing and accounts signals (facts, not a rating)

- Net assets above zero: Net assets £5,815,287 at 30 June 2025
- Current assets at least 1.5× creditors within one year: Current ratio 10.74
- Cash at bank of £50,000 or more: Cash £3,875,921
- Incorporated five or more years ago: Incorporated 23 July 2002

How each signal is derived: https://firmoscan.com/methodology

## Persons with significant control

- Professor Russell Paul Cowburn — owns 75–100% of shares; holds 75–100% of voting rights; can appoint or remove directors, since 2016-07-01

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Source: Companies House register snapshot 2026-08-31, Open Government Licence v3.0. Information may have changed since that date and is not advice or a credit reference; check the official record before relying on it. Official record: https://find-and-update.company-information.service.gov.uk/company/04492798
HTML: https://firmoscan.com/company/04492798-durham-magneto-optics-ltd