- Companies
- Electricians
- London
- S A Fire and Security Systems Limited
S A Fire and Security Systems Limited
- Company number
- 02916866
- Incorporated
- 8 Apr 199432 years trading
- Registered office
- Boundary House Boston Road, Hanwell, London, W7 2QE
- Nature of business
- Electrical installation; Security systems service activities
S A Fire and Security Systems Limited is a 32-year-old private limited company registered in London, company number 02916866, one of 3,448 electrical contractors in London. Its next accounts are due at Companies House on 29 December 2026, and the CT600 for the period to 29 March 2026 is due at HMRC on 29 March 2027.
Key dates
Worked out from the year end and filing history on the Companies House register.
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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 £89K (+42.5%) on the year before, to £298K.
- Net assets rose in 6 of 9 year-on-year comparisons on record.
- Current assets of £725K against £345K owed within a year: 2.1 times cover.
- 17 employees on average, up from 16 the year before.
- Balance sheets on record for 10 years, 2016 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 30 Mar 2025 | £298K | £234K | £725K | £345K | 17 |
| 30 Mar 2024 | £209K | £178K | £615K | £374K | 16 |
| 30 Mar 2023 | £180K | £293K | £862K | £621K | 15 |
| 30 Mar 2022 | £179K | £213K | £629K | £368K | 18 |
| 30 Mar 2021 | £219K | £206K | £464K | £227K | 17 |
| 30 Mar 2020 | £196K | £100K | £544K | £363K | 21 |
| 30 Mar 2019 | £282K | £126K | £585K | £286K | 16 |
| 30 Mar 2018 | £362K | £267K | £588K | £263K | 16 |
| 30 Mar 2017 | £284K | £221K | £572K | £272K | 17 |
| 30 Mar 2016 | £222K | £222K | £454K | £179K |
Public contracts won
S A Fire and Security Systems Limited has 2 public sector contract awards on record; the ones with their own published value total £450K, from 2020 to 2021. Source: Contracts Finder and Find a Tender award notices. These were matched by the company's exact name because the notice gave no company number.
Awards by year
Main buyers
- West London NHS Trust1 award
- Salvation Army Housing Association1 award
| Buyer | Contract | Value | Awarded |
|---|---|---|---|
| West London NHS Trust | Provision of Fire Alarm and Associated Maintenance Services - 2020159 CEF | £427K | 1 Apr 2021 |
| Salvation Army Housing Association | Replacement Fire Alarm System | £23K | 2 Sep 2020 |
Where S A Fire and Security Systems Limited is registered
The registered office is in London (W7), in the Ealing local authority area, London. Show W7 2QE on a map.
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What happens if S A Fire and 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 29 December 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 30 Dec 2026 to 29 Jan 2027 | £150 |
| 1 to 3 months late | 30 Jan 2027 to 29 Mar 2027 | £375 |
| 3 to 6 months late | 30 Mar 2027 to 29 Jun 2027 | £750 |
| More than 6 months late | From 30 Jun 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 30 Mar 2027 | £200 |
| 3 months late | 29 Jun 2027 | another £200 |
| 6 months late | 29 Sep 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 29 Mar 2028 | 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
- 02916866
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 8 April 1994 (32 years ago)
- Registered office
- Boundary House Boston Road, Hanwell, London, W7 2QE
- Nature of business
- Electrical installation (SIC 43210)
Security systems service activities (SIC 80200) - Year end
- 29 March (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 30 March 2025
- Last confirmation statement
- 26 July 2026
- Charges (mortgages)
- 1 outstanding of 1 registered
- Previous names
- Secureassist Limited (until 19 Nov 2013)
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 London
Other active electrical contractors registered in London.
- S A S Electrical (Ellesmere) Limited2022
- S A Wright & Sons Ltd2017
- S and A Electrics Ltd2022
- S D Heating & Electrics Ltd2022
- S N Grand Ltd2021
- S P L Installations Limited1997
- S&A Group London Ltd2026
- S&A London Electric Limited2017
All electrical contractors in London · All trades in London · Electricians across the UK
Frequently asked questions
When are S A Fire and Security Systems Limited's accounts due?
S A Fire and Security Systems Limited's next accounts are due at Companies House by 29 December 2026 (in 77 days), covering the period to 29 March 2026.
When is S A Fire and Security Systems Limited's CT600 due?
The CT600 for the period to 29 March 2026 is due at HMRC by 29 March 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 30 December 2026.
Is S A Fire and Security Systems Limited still trading?
S A Fire and 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 S A Fire and Security Systems Limited do?
S A Fire and Security Systems Limited is registered under Electrical installation (SIC 43210); Security systems service activities (SIC 80200).
How old is S A Fire and Security Systems Limited?
S A Fire and Security Systems Limited was incorporated on 8 April 1994, 32 years ago.
Has S A Fire and Security Systems Limited won public sector contracts?
Yes. S A Fire and Security Systems Limited has 2 contract awards from public bodies on Contracts Finder and Find a Tender (those with their own published value total £450K), most recently from West London NHS Trust.
What is the penalty if S A Fire and 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 S A Fire and 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.