# PROTON CONTRACTS LIMITED (13372966)

> PROTON CONTRACTS LIMITED is an active private limited company (company number 13372966) incorporated on 4 May 2021, registered in London. Its registered activity is construction of commercial buildings (SIC 41201). Latest small accounts cover the period ending 31 May 2026, showing net assets of £14k and cash of £392, with 1 employee on average. Turnover was £404k and profit for the year £46k.

- Status: Active
- Incorporated: 2021-05-04
- Registered office: London, N14 5AB
- SIC 41201: Construction of commercial buildings
- SIC 41202: Construction of domestic buildings
- Next accounts due: 2028-02-29
- Confirmation statement due: 2027-05-18
- Accounts type: TOTAL EXEMPTION FULL

By net assets it sits in the upper half of 3,808 comparable companies in London (median £1,934, upper quartile £21k).

## Accounts (as filed)

| Period end | Net assets | Cash | Debtors | Creditors <1y | Turnover | Profit | Employees |
|---|---|---|---|---|---|---|---|
| 2026-05-31 | £14k | £392 | £8,691 | £25k | £404k | £46k | 1 |
| 2025-06-01 | — | — | — | — | — | — | — |
| 2025-05-31 | £32k | £11k | £83k | £69k | £396k | £6,962 | 1 |
| 2024-06-01 | — | — | — | — | — | — | — |

current ratio 0.37; net margin 11.4%; size band micro.

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

- Net assets above zero: Net assets £13,676 at 31 May 2026
- Current assets below creditors within one year: Current ratio 0.37
- Three or more accounting periods on record: 4 periods on record
- Incorporated five or more years ago: Incorporated 4 May 2021

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

## Persons with significant control

- Ms Daria Justyna Zwirn-Zawilska — owns 75–100% of shares; holds 75–100% of voting rights; can appoint or remove directors, since 2021-05-04

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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/13372966
HTML: https://firmoscan.com/company/13372966-proton-contracts-limited