- Companies
- Electricians
- Widnes
- Radium Security Systems Limited
Radium Security Systems Limited
- Company number
- 03703410
- Incorporated
- 28 Jan 199927 years trading
- Registered office
- Unit 4 Turnstone Business Park, Mulberry Avenue, Widnes, WA8 0WN
- Nature of business
- Electrical installation
Radium Security Systems Limited is a 27-year-old private limited company registered in Widnes, company number 03703410, one of 51 electrical contractors in Widnes. Its next accounts are due at Companies House on 31 October 2027, and the CT600 for the period to 31 January 2027 is due at HMRC on 31 January 2028.
Key dates
Worked out from the year end and filing history on the Companies House register.
Is this your company?
File the accounts to Companies House and the CT600 to HMRC yourself with A.X.E.L Filing. One set of questions, both filings, £49 flat. No accountant, no subscription.
File for Radium Security Systems LimitedOr get a reminder before each deadline
Free. We email you 60, 30, 14, 7 and 1 days before the accounts, CT600 and confirmation statement are due. Unsubscribe in one click.
Finances
From each year's balance sheet filed at Companies House. Small companies do not have to publish turnover or profit, so these are balance sheet figures.
- Net assets up £26K (+8%) on the year before, to £347K.
- Net assets rose in 7 of 9 year-on-year comparisons on record.
- Current assets of £129K against £162K owed within a year: 0.8 times cover.
- 7 employees on average during the year.
- Balance sheets on record for 10 years, 2017 to 2026.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Jan 2026 | £347K | £38K | £129K | £162K | 7 |
| 31 Jan 2025 | £321K | £43K | £111K | £159K | 7 |
| 31 Jan 2024 | £309K | £14K | £94K | £167K | 0 |
| 31 Jan 2023 | £138K | £0 | £109K | £195K | 11 |
| 31 Jan 2022 | £167K | £122 | £128K | £164K | 8 |
| 31 Jan 2021 | £155K | £855 | £149K | £164K | 11 |
| 31 Jan 2020 | £93K | £80 | £126K | £202K | 11 |
| 31 Jan 2019 | £56K | £2,095 | £135K | £234K | 11 |
| 31 Jan 2018 | £992 | £1,029 | £128K | £229K | 11 |
| 31 Jan 2017 | £6,441 | £49K | £155K | £154K | 11 |
Where Radium Security Systems Limited is registered
The registered office is in Widnes (WA8), in the Halton local authority area, North West. Show WA8 0WN on a map.
Other trade companies in WA8
- 18B Developments LimitedProperty developers
- Alpha Heating NW LtdPlumbers and heating engineers
- Mem Exterior Cleaning LimitedCleaning companies
- MZF Accessories LtdMachinery repair and installation
- Advanced Robotic Manufacturing Services LtdMachinery repair and installation
- Discovery Roofing Contractors LtdRoofers
- Spartan Property Developments LtdFinishing trades
- B Automation Services LtdMachinery repair and installation
What happens if Radium Security Systems Limited files late
Companies House charges an automatic penalty the day after the deadline, and it rises the longer the accounts are late. These are the dates for this company's accounts due on 31 October 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Nov 2027 to 30 Nov 2027 | £150 |
| 1 to 3 months late | 1 Dec 2027 to 31 Jan 2028 | £375 |
| 3 to 6 months late | 1 Feb 2028 to 30 Apr 2028 | £750 |
| More than 6 months late | From 1 May 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Feb 2028 | £200 |
| 3 months late | 30 Apr 2028 | another £200 |
| 6 months late | 31 Jul 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Jan 2029 | another 10% of any unpaid tax |
For returns filed on or after 1 April 2026. Late three times in a row and the £200 penalties become £1,000 each.
Company details
As held on the Companies House register.
- Company number
- 03703410
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 28 January 1999 (27 years ago)
- Registered office
- Unit 4 Turnstone Business Park, Mulberry Avenue, Widnes, WA8 0WN
- Nature of business
- Electrical installation (SIC 43210)
- Year end
- 31 January (accounting reference date)
- Accounts type
- Unaudited abridged
- Last accounts made up to
- 31 January 2026
- Last confirmation statement
- 7 January 2026
- Charges (mortgages)
- 2 outstanding of 4 registered
Filing notes for electrical contractors
Electrical contracting companies are often a director plus a van and tools. Most fall within the micro-entity rules, so the accounts filed at Companies House are short, and the CT600 carries the tax detail.
Similar companies in Widnes
Other active electrical contractors registered in Widnes.
- Riley Electrical Solutions Ltd2023
- RSD Electrical Ltd2025
- Rtec - Electrical Services Ltd2022
- Sector 7 Electrical Services Limited2017
- Solas Energy Solutions Ltd2025
- Swift Electrical NW Ltd2023
- SWS Contracting Ltd2022
- SWS Northwest Ltd2017
All electrical contractors in Widnes · All trades in Widnes · Electricians across the UK
Frequently asked questions
When are Radium Security Systems Limited's accounts due?
Radium Security Systems Limited's next accounts are due at Companies House by 31 October 2027 (in 383 days), covering the period to 31 January 2027.
When is Radium Security Systems Limited's CT600 due?
The CT600 for the period to 31 January 2027 is due at HMRC by 31 January 2028, 12 months after the period end. The corporation tax itself is payable earlier, by 1 November 2027.
Is Radium Security Systems Limited still trading?
Radium Security Systems Limited is listed as active on the Companies House register as of 1 Oct 2026. Active means it has not been dissolved or entered insolvency; it does not show whether it is currently taking on work.
What does Radium Security Systems Limited do?
Radium Security Systems Limited is registered under Electrical installation (SIC 43210).
How old is Radium Security Systems Limited?
Radium Security Systems Limited was incorporated on 28 January 1999, 27 years ago.
What is the penalty if Radium Security Systems Limited files its accounts late?
Companies House charges £150 if the accounts are up to 1 month late, £375 up to 3 months, £750 up to 6 months and £1,500 after that, doubled if the previous year's accounts were also late. HMRC charges £200 for a CT600 filed a day late and another £200 at 3 months.
Official records
View Radium Security Systems Limited on Companies House for filed documents, officers and the full history.
Based on the Companies House register (snapshot 1 Oct 2026). Deadlines are worked out from the register and assume a standard accounting period; a change of year end or a short period moves them. This page is general information, not tax or accountancy advice.