PROTOCOL CONTROL SYSTEMS LIMITED
ActiveKey figures
Like most small UK companies, PROTOCOL CONTROL SYSTEMS LIMITED does not publish a profit and loss account in its latest accounts. The figures below come from the balance sheet.
Ratios
2025Sector comparison
SIC 27900Where the company stands among the 2,356 active companies whose first SIC code is 27900 (Manufacture of other electrical equipment).
- CITY ELECTRICAL FACTORS LIMITED£260.7m
- JOHNSON ELECTRIC INTERNATIONAL (UK) LIMITED£260.6m
- DOMINO UK LIMITED£118m
- FOCUSRITE PLC£111m
- EATON ELECTRIC LIMITED£109m
- DEEP SEA ELECTRONICS LIMITED£108.5m
- EATON ELECTRICAL PRODUCTS LIMITED£108m
- CICOR UK LTD£84m
- APOLLO FIRE DETECTORS LIMITED£83.2m
- PENNY & GILES CONTROLS LIMITED£82.7m
Positions are approximate. Figures come from each company's latest accounts; money and employee figures are compared only with companies that filed accounts in pounds for a period ending in the last two and a half years and are not dormant, so those groups are smaller than 2,356. The line on each bar marks the median.
Summary: PROTOCOL CONTROL SYSTEMS LIMITED
What kind of company is it?
PROTOCOL CONTROL SYSTEMS LIMITED is a private limited company registered with Companies House under company number 03133577. It was incorporated on 4 Dec 1995. Its status is active. The registered office is in Kington (HR5). Its nature of business (SIC 2007) is manufacture of other electrical equipment (27900), electrical installation (43210).
How is the company doing financially?
The latest accounts in the database are for 2025 (period ending 31 Dec 2025); the company files small company accounts (filleted). Net assets were £2,154,006, up 39.1% on the previous year. Cash at bank and in hand was £762,007. Total assets were £2,841,735 and total liabilities £632,391. The company had an average of 57 employees. Figures are available for 6 financial years (2020–2025).
How does it compare with similar companies?
Compared with 2,356 active companies whose first SIC code is 27900: By net assets it ranks higher than 83% of them (median £100,133). By total assets it ranks higher than 81% of them (median £298,678). By cash it ranks higher than 79% of them (median £131,149). By number of employees it ranks higher than 95% of them (median 2). It is older than 79% of them (median age 15.3 years).
What do public registers and reports show?
HMRC lists it as an importer of goods, mainly optical, medical and measuring instruments.
Who runs and controls the company?
The company has 6 current directors. 5 persons with significant control are registered. 1 of 4 registered charges are outstanding.
When are its next filings due?
The next accounts are due by 30 Sep 2027. The next confirmation statement is due by 19 Dec 2026.
Filed accounts2020–2025
| 2021 | 2022 | 2023 | 2024 | 2025 | |
|---|---|---|---|---|---|
| Cash at bank and in hand | 162,826 | 211,054 | 633,024 | 598,115 | 762,007 |
| Total assets | 1,040,037 | 1,257,112 | 1,737,615 | 2,238,533 | 2,841,735 |
| Total liabilities | — | — | — | 634,120 | 632,391 |
| Net assets / total equity | 645,513 | 811,403 | 1,237,936 | 1,548,605 | 2,154,006 |
| Average number of employees | 44 | 43 | 51 | 54 | 57 |
A dash (—) means no accounts were filed for that year or the item is not in the accounts; 0 is a zero stated in the accounts. Small companies usually file only a balance sheet, so the profit and loss account is often missing.
Registers and licences
Listed by HMRC as an importer of goods in 1 of the last 12 months on record, most recently February 2026. Main goods: optical, medical and measuring instruments.
From HMRC's monthly lists of importers and exporters. Traders can ask to be left off the lists, so absence does not mean a company does not trade.
Sources: Charity Commission for England and Wales, Care Quality Commission, Home Office and HM Revenue & Customs, under the Open Government Licence v3.0. Entries marked ‡ come from lists that do not state a company number and were linked by an exact match on the registered name.
History
25 events- Mr David Maurice Williams registered as a person with significant control
- Graham William Thomas registered as a person with significant control
- Mr Matthew Carl Davies registered as a person with significant control
- John Douglas Thomas registered as a person with significant control
- Miss Kate Rosanne Thomas registered as a person with significant control
- Financial year 2025 endedAccounts: net assets £2.2m, 57 employees
- Alan William Michael THOMAS resignedDirector
- Financial year 2024 endedAccounts: net assets £1.5m, 54 employees
Earlier events (17)
- Kate Rosanne THOMAS resignedSecretary
- Matthew Carl DAVIES appointedSecretary
- David Maurice WILLIAMS appointedDirector
- Financial year 2023 endedAccounts: net assets £1.2m, 51 employees
- Financial year 2022 endedAccounts: net assets £811.4k, 43 employees
- Financial year 2021 endedAccounts: net assets £645.5k, 44 employees
- John Douglas THOMAS resignedSecretary
- Kate Rosanne THOMAS appointedSecretary
- Financial year 2020 endedAccounts: net assets £853.1k, 47 employees
- Matthew Carl DAVIES appointedDirector
- Kate Rosanne THOMAS appointedDirector
- Alan William Michael THOMAS appointedDirector
- John Douglas THOMAS appointedDirector
- Melvyn John THOMAS appointedDirector
- Graham William THOMAS appointedDirector
- John Douglas THOMAS appointedSecretary
- Company incorporatedPrivate limited company
Dates as recorded at Companies House: incorporation, name changes, officer appointments and resignations, current persons with significant control, and the end of each financial year with figures in the database. Former persons with significant control are not listed.