- Companies
- Cleaning companies
- London
- Watt A Clean Ltd
Watt A Clean Ltd
- Company number
- 17388536
- Incorporated
- 7 Aug 2026
- Registered office
- 167-169 Great Portland Street, 5TH Floor, London, W1W 5PF
- Nature of business
- General cleaning of buildings
Watt A Clean Ltd is a newly incorporated private limited company registered in London, company number 17388536, one of 5,627 cleaning companies in London. Its next accounts are due at Companies House on 7 May 2028, and its first CT600 is due at HMRC on 6 August 2028.
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 Watt A Clean Ltd is registered
The registered office is in London (W1W), in the Westminster local authority area, London. Show W1W 5PF on a map.
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- Steam Wood Stone LtdFinishing trades
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- Group Atlas Financial 83 LtdPainters and decorators
- Energy Reward LtdMotor traders
- Holly’S Housekeeping LtdCleaning companies
Shared registered office
1,494 companies on our pages use this registered office address. An address shared this widely is usually an accountant's office or a company formation agent's service address, not where the business trades from.
What happens if Watt A Clean 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 7 May 2028.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 8 May 2028 to 7 Jun 2028 | £150 |
| 1 to 3 months late | 8 Jun 2028 to 7 Aug 2028 | £375 |
| 3 to 6 months late | 8 Aug 2028 to 7 Nov 2028 | £750 |
| More than 6 months late | From 8 Nov 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Sep 2028 | £200 |
| 3 months late | 30 Nov 2028 | another £200 |
| 6 months late | 28 Feb 2029 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Aug 2029 | 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
- 17388536
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 7 August 2026
- Registered office
- 167-169 Great Portland Street, 5TH Floor, London, W1W 5PF
- Nature of business
- General cleaning of buildings (SIC 81210)
- Year end
- 31 August (accounting reference date)
- Accounts type
- No accounts filed yet
Filing notes for cleaning companies
Cleaning companies are often staff-heavy, so wages, pension contributions and the employment allowance all show up in the accounts.
Similar companies in London
Other active cleaning companies registered in London.
- Waxmonkey Ltd2026
- WCL Limited2009
- We Are Clean Ltd2026
- We Clean 2 You Ltd2021
- We Clean for You Ltd2025
- We Clean So You Don't Have to Ltd2026
- We Do Any Clean Ltd2022
- We Sparkle Clean Ltd2024
All cleaning companies in London · All trades in London · Cleaning companies across the UK
Frequently asked questions
When are Watt A Clean Ltd's accounts due?
Watt A Clean Ltd's next accounts are due at Companies House by 7 May 2028 (in 572 days), covering the period to 31 August 2027.
When is Watt A Clean 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 6 August 2027, due by 6 August 2028, and one for the period to 31 August 2027, due by 31 August 2028. Corporation tax is payable 9 months and 1 day after the end of each.
Is Watt A Clean Ltd still trading?
Watt A Clean 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 Watt A Clean Ltd do?
Watt A Clean Ltd is registered under General cleaning of buildings (SIC 81210).
How old is Watt A Clean Ltd?
Watt A Clean Ltd was incorporated on 7 August 2026, less than a year ago.
What is the penalty if Watt A Clean 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 Watt A Clean 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.