- Companies
- Electricians
- London
- Gridcore Electrical Services Limited
Gridcore Electrical Services Limited
- Company number
- 15820070
- Incorporated
- 4 Jul 20242 years trading
- Registered office
- 16/18 Beak Street, London, W1F 9RD
- Nature of business
- Electrical installation
Gridcore Electrical Services Limited is a 2-year-old private limited company registered in London, company number 15820070, one of 3,448 electrical contractors in London. Its next accounts are due at Companies House on 30 September 2027, and the CT600 for the period to 31 December 2026 is due at HMRC on 31 December 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 31 December 2025, as filed at Companies House.
Where Gridcore Electrical Services Limited is registered
The registered office is in London (W1F), in the Westminster local authority area, London. Show W1F 9RD on a map.
Other trade companies in W1F
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- Bayford Facilities Services LtdPlumbers and heating engineers
- Dien Cho LtdBuilders
- Merchant Place Homes LtdProperty developers
- Laid Off Thames LimitedSpecialist contractors
- Atlas Firestopping LimitedInstallers
- Ma CSP Developments LimitedProperty developers
- Prosperous WXW LtdBuilders
Also registered at this address
3 other companies use the same registered office as Gridcore Electrical Services Limited.
- North West Transport Supplies LimitedMachinery repair and installation
- Sandbrook Homes LimitedBuilders
- Tigerelec LimitedElectricians
What happens if Gridcore Electrical Services 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 30 September 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Oct 2027 to 31 Oct 2027 | £150 |
| 1 to 3 months late | 1 Nov 2027 to 31 Dec 2027 | £375 |
| 3 to 6 months late | 1 Jan 2028 to 31 Mar 2028 | £750 |
| More than 6 months late | From 1 Apr 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jan 2028 | £200 |
| 3 months late | 31 Mar 2028 | another £200 |
| 6 months late | 30 Jun 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Dec 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
- 15820070
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 4 July 2024 (2 years ago)
- Registered office
- 16/18 Beak Street, London, W1F 9RD
- Nature of business
- Electrical installation (SIC 43210)
- Year end
- 31 December (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 December 2025
- Last confirmation statement
- 31 October 2025
- Previous names
- Relectric Infrastructure Limited (until 26 Jan 2026)
Relec UK Trading Limited (until 9 Jan 2026)
Relectric Infrastructure Limited (until 3 Sep 2025)
Huk 144 Limited (until 13 Nov 2024)
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.
- Gridcore Engineering Ltd2026
- Grosvenor Electrical Engineering Limited2015
- Group K Ltd2020
- Grouptronic System Ltd2021
- Growjump Holdings Ltd2025
- Gsa Electrical Services Ltd2021
- Gsatv Limited2006
- GSK Electrical Contractors & Co Limited2023
All electrical contractors in London · All trades in London · Electricians across the UK
Frequently asked questions
When are Gridcore Electrical Services Limited's accounts due?
Gridcore Electrical Services Limited's next accounts are due at Companies House by 30 September 2027 (in 353 days), covering the period to 31 December 2026.
When is Gridcore Electrical Services Limited's CT600 due?
The CT600 for the period to 31 December 2026 is due at HMRC by 31 December 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 October 2027.
Is Gridcore Electrical Services Limited still trading?
Gridcore Electrical Services 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 Gridcore Electrical Services Limited do?
Gridcore Electrical Services Limited is registered under Electrical installation (SIC 43210).
How old is Gridcore Electrical Services Limited?
Gridcore Electrical Services Limited was incorporated on 4 July 2024, 2 years ago.
What is the penalty if Gridcore Electrical Services 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 Gridcore Electrical Services 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.