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- Grant Security Installations Ltd
Company profile · Electricians
Grant Security Installations Ltd
Grant Security Installations Ltd is a 2-year-old private limited company registered in London, company number 15638902, one of 3,448 electrical contractors in London. Its next accounts are due at Companies House on 31 January 2027, and the CT600 for the period to 30 April 2026 is due at HMRC on 30 April 2027.
Key dates
Worked out from the year end and filing history on the Companies House register.
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Financial snapshot, 2025
From the balance sheet at 30 April 2025, as filed at Companies House.
Where Grant Security Installations Ltd is registered
The registered office is in London (N13), in the Enfield local authority area, London. Show N13 5XD on a map.
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Also registered at this address
3 other companies use the same registered office as Grant Security Installations Ltd.
- Aga Construction LimitedSpecialist contractors
- Agk Building Services LimitedFinishing trades
- Diagnostic Services and Repairs LimitedMechanics and garages
What happens if Grant Security Installations Ltd 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 January 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Feb 2027 to 28 Feb 2027 | £150 |
| 1 to 3 months late | 1 Mar 2027 to 30 Apr 2027 | £375 |
| 3 to 6 months late | 1 May 2027 to 31 Jul 2027 | £750 |
| More than 6 months late | From 1 Aug 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 May 2027 | £200 |
| 3 months late | 30 Jul 2027 | another £200 |
| 6 months late | 30 Oct 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Apr 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
- 15638902
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 12 April 2024 (2 years ago)
- Registered office
- 1ST Floor, 446A Green Lanes, London, N13 5XD
- Nature of business
- Electrical installation (SIC 43210)
- Year end
- 30 April (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 30 April 2025
- Last confirmation statement
- 11 April 2026
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.
- Grayson & Chester Electrical Ltd2024
- Graysparks Ltd2024
- Graysservices Ltd2019
- Great Britain Services Ltd2018
- Green & Yellow Electrical Limited2025
- Green Energy Construction Ltd2025
- Green London Electrical Limited2020
- Green Scope Property Solutions Ltd2025
All electrical contractors in London · All trades in London · Electricians across the UK
Frequently asked questions
When are Grant Security Installations Ltd's accounts due?
Grant Security Installations Ltd's next accounts are due at Companies House by 31 January 2027 (in 111 days), covering the period to 30 April 2026.
When is Grant Security Installations Ltd's CT600 due?
The CT600 for the period to 30 April 2026 is due at HMRC by 30 April 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 February 2027.
Is Grant Security Installations Ltd still trading?
Grant Security Installations Ltd 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 Grant Security Installations Ltd do?
Grant Security Installations Ltd is registered under Electrical installation (SIC 43210).
How old is Grant Security Installations Ltd?
Grant Security Installations Ltd was incorporated on 12 April 2024, 2 years ago.
What is the penalty if Grant Security Installations Ltd 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 Grant Security Installations Ltd on Companies House for filed documents, officers and the full history.
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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.