- Companies
- Electricians
- London
- Prospser Holdings (London) Limited
Prospser Holdings (London) Limited
- Company number
- 16444858
- Incorporated
- 12 May 20251 year trading
- Registered office
- Shaw Wallace, 43, Manchester Street, London, W1U 7LP
- Nature of business
- Electrical installation; Other business support service activities n.e.c.
Prospser Holdings (London) Limited is a 1-year-old private limited company registered in London, company number 16444858, one of 3,448 electrical contractors in London. Its next accounts are due at Companies House on 12 February 2027, and its first CT600 is due at HMRC on 11 May 2027.
Key dates
This company has not filed accounts yet. First accounts are due 21 months after incorporation, and the first period can run longer than a year.
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Where Prospser Holdings (London) Limited is registered
The registered office is in London (W1U), in the Westminster local authority area, London. Show W1U 7LP on a map.
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What happens if Prospser Holdings (London) 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 12 February 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 13 Feb 2027 to 12 Mar 2027 | £150 |
| 1 to 3 months late | 13 Mar 2027 to 12 May 2027 | £375 |
| 3 to 6 months late | 13 May 2027 to 12 Aug 2027 | £750 |
| More than 6 months late | From 13 Aug 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jun 2027 | £200 |
| 3 months late | 31 Aug 2027 | another £200 |
| 6 months late | 30 Nov 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 May 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
- 16444858
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 12 May 2025 (1 year ago)
- Registered office
- Shaw Wallace, 43, Manchester Street, London, W1U 7LP
- Nature of business
- Electrical installation (SIC 43210)
Other business support service activities n.e.c. (SIC 82990) - Year end
- 31 May (accounting reference date)
- Accounts type
- No accounts filed yet
- Last confirmation statement
- 28 October 2025
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.
- Proswiss Limited2026
- Protec Energy Ltd2020
- Protec(UK) Ltd2025
- Protech Electrics Service Ltd2022
- Proton Contractor Ltd2018
- Proton Electrics Ltd2023
- Providence Maintenance Ltd2023
- Provision Energy Ltd2025
All electrical contractors in London · All trades in London · Electricians across the UK
Frequently asked questions
When are Prospser Holdings (London) Limited's accounts due?
Prospser Holdings (London) Limited's next accounts are due at Companies House by 12 February 2027 (in 122 days), covering the period to 31 May 2026.
When is Prospser Holdings (London) Limited's CT600 due?
The first accounts cover more than 12 months, so there are two Company Tax Returns: one for the 12 months to 11 May 2026, due by 11 May 2027, and one for the period to 31 May 2026, due by 31 May 2027. Corporation tax is payable 9 months and 1 day after the end of each.
Is Prospser Holdings (London) Limited still trading?
Prospser Holdings (London) 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 Prospser Holdings (London) Limited do?
Prospser Holdings (London) Limited is registered under Electrical installation (SIC 43210); Other business support service activities n.e.c. (SIC 82990).
How old is Prospser Holdings (London) Limited?
Prospser Holdings (London) Limited was incorporated on 12 May 2025, 1 year ago.
What is the penalty if Prospser Holdings (London) 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 Prospser Holdings (London) 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.