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- Simplecore Ltd
Company profile · Electricians
Simplecore Ltd
Simplecore Ltd is a 2-year-old private limited company registered in London, company number 15658649, 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 Simplecore Ltd is registered
The registered office is in London (SE5), in the Southwark local authority area, London. Show SE5 9HG on a map.
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What happens if Simplecore 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
- 15658649
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 18 April 2024 (2 years ago)
- Registered office
- Flat 27 Witham House, Crawford Estate, London, SE5 9HG
- Nature of business
- Electrical installation (SIC 43210)
Temporary employment agency activities (SIC 78200) - Year end
- 30 April (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 30 April 2025
- Last confirmation statement
- 28 February 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.
- Simplex Electrical Limited2019
- Simply Electrical Contractors Ltd2021
- Simply Safe Ltd2026
- Simpsons Lighting and Electrical Installation Limited2007
- Sine Wave Electrical Ltd2014
- Sinead Consultants Limited2014
- Siqa Group Limited2022
- Sisyphean Summits Ltd2024
All electrical contractors in London · All trades in London · Electricians across the UK
Frequently asked questions
When are Simplecore Ltd's accounts due?
Simplecore 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 Simplecore 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 Simplecore Ltd still trading?
Simplecore 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 Simplecore Ltd do?
Simplecore Ltd is registered under Electrical installation (SIC 43210); Temporary employment agency activities (SIC 78200).
How old is Simplecore Ltd?
Simplecore Ltd was incorporated on 18 April 2024, 2 years ago.
What is the penalty if Simplecore 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 Simplecore Ltd 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.