# PROTON MECHANICAL ENGINEERING LIMITED (06266791)

> PROTON MECHANICAL ENGINEERING LIMITED is an active private limited company (company number 06266791) incorporated on 1 June 2007, registered in Plymouth. Its registered activity is other business support service activities n.e.c. (SIC 82990). Latest micro accounts cover the period ending 30 June 2025, showing net assets of £93k, with 1 employee on average. As micro-entity accounts, no profit and loss account is filed, so turnover and profit are not public. Net assets fell 2% on the prior period (£94k).

- Status: Active
- Incorporated: 2007-06-01
- Registered office: Plymouth, PL7 2BH
- SIC 82990: Other business support service activities n.e.c.
- Next accounts due: 2027-03-30
- Confirmation statement due: 2027-06-15
- Accounts type: MICRO ENTITY

By net assets it sits in the top quarter of 17,790 comparable companies in Other (median £3,372, upper quartile £48k).

## Accounts (as filed)

| Period end | Net assets | Cash | Debtors | Creditors <1y | Turnover | Profit | Employees |
|---|---|---|---|---|---|---|---|
| 2025-06-30 | £93k | — | — | — | — | — | 1 |
| 2024-06-30 | £94k | — | — | — | — | — | 1 |

size band micro.

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

- Net assets above zero: Net assets £92,918 at 30 June 2025
- Incorporated five or more years ago: Incorporated 1 June 2007

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

## Persons with significant control

- Mr Alasdair De Fraine Rose — owns 75–100% of shares; holds 75–100% of voting rights; can appoint or remove directors, since 2016-04-06

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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/06266791
HTML: https://firmoscan.com/company/06266791-proton-mechanical-engineering-limited