- Companies
- Repair services
- London
- Mouseproof Ltd
Mouseproof Ltd
- Company number
- 16661207
- Incorporated
- 20 Aug 20251 year trading
- Registered office
- Flat 7 Heather Court, Evelyn Street, London, SE8 5QZ
- Nature of business
- Repair of household appliances and home and garden equipment
Mouseproof Ltd is a 1-year-old private limited company registered in London, company number 16661207, one of 778 repair companies (computers, appliances, furniture and similar) in London. Its next accounts are due at Companies House on 20 May 2027, and its first CT600 is due at HMRC on 19 August 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.
Is this your company?
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Where Mouseproof Ltd is registered
The registered office is in London (SE8), in the Lewisham local authority area, London. Show SE8 5QZ on a map.
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What happens if Mouseproof 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 20 May 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 21 May 2027 to 20 Jun 2027 | £150 |
| 1 to 3 months late | 21 Jun 2027 to 20 Aug 2027 | £375 |
| 3 to 6 months late | 21 Aug 2027 to 20 Nov 2027 | £750 |
| More than 6 months late | From 21 Nov 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Sep 2027 | £200 |
| 3 months late | 30 Nov 2027 | another £200 |
| 6 months late | 29 Feb 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Aug 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
- 16661207
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 20 August 2025 (1 year ago)
- Registered office
- Flat 7 Heather Court, Evelyn Street, London, SE8 5QZ
- Nature of business
- Repair of household appliances and home and garden equipment (SIC 95220)
- Year end
- 31 August (accounting reference date)
- Accounts type
- No accounts filed yet
Filing notes for repair companies (computers, appliances, furniture and similar)
Repair companies are mostly small micro-entities with simple accounts: parts, tools and a workshop or van.
Similar companies in London
Other active repair companies (computers, appliances, furniture and similar) registered in London.
- MR Bennet Company Ltd2025
- MR Fix IT Group Limited2021
- MR Shoefix Ltd2026
- MR Unlocks Ltd2025
- Mrfix Projects &Construction Ltd2020
- Multi Tech London Ltd2026
- My Repair Services Limited2020
- Nationwide FM Services Ltd2025
All repair companies (computers, appliances, furniture and similar) in London · All trades in London · Repair services across the UK
Frequently asked questions
When are Mouseproof Ltd's accounts due?
Mouseproof Ltd's next accounts are due at Companies House by 20 May 2027 (in 219 days), covering the period to 31 August 2026.
When is Mouseproof Ltd's CT600 due?
The first accounts cover more than 12 months, so there are two Company Tax Returns: one for the 12 months to 19 August 2026, due by 19 August 2027, and one for the period to 31 August 2026, due by 31 August 2027. Corporation tax is payable 9 months and 1 day after the end of each.
Is Mouseproof Ltd still trading?
Mouseproof Ltd is listed as active on the Companies House register (checked 13 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 Mouseproof Ltd do?
Mouseproof Ltd is registered under Repair of household appliances and home and garden equipment (SIC 95220).
How old is Mouseproof Ltd?
Mouseproof Ltd was incorporated on 20 August 2025, 1 year ago.
What is the penalty if Mouseproof 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 Mouseproof Ltd on Companies House for filed documents, officers and the full history.
Based on the Companies House register (snapshot 1 Oct 2026, rechecked 13 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.