- Companies
- Cleaning companies
- London
- Mighty Clean Windows Ltd
Mighty Clean Windows Ltd
- Company number
- 16175379
- Incorporated
- 10 Jan 20251 year trading
- Registered office
- 3RD Floor, 86-90, Paul Street, London, EC2A 4NE
- Nature of business
- Window cleaning services; Specialised cleaning services
Mighty Clean Windows Ltd is a 1-year-old private limited company registered in London, company number 16175379, one of 5,627 cleaning companies in London. Companies House shows its accounts as overdue: they were due on 10 October 2026.
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?
File the first accounts to Companies House and the CT600 to HMRC yourself with A.X.E.L Filing. One set of questions, both filings, £49 flat. No accountant, no subscription.
File for Mighty Clean Windows LtdOr get a reminder before each deadline
Free. We email you 60, 30, 14, 7 and 1 days before the accounts, CT600 and confirmation statement are due. Unsubscribe in one click.
Where Mighty Clean Windows Ltd is registered
The registered office is in London (EC2A), in the Hackney local authority area, London. Show EC2A 4NE on a map.
Other trade companies in EC2A
- Simlan Management LtdCleaning companies
- Renova Secure LtdBuilders
- Auraglasspartitions LtdGlaziers
- A2D Professional Cleaning LtdCleaning companies
- Matson Co. LtdProperty developers
- Paint Hub LimitedMechanics and garages
- SJK Construction & Management LtdBuilders
- Cenlora Cleaning Group LtdCleaning companies
Shared registered office
1,581 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 Mighty Clean Windows Ltd files late
If the accounts reach Companies House today, the late filing penalty is £150 (£300 if last year's accounts were also late). It rises at each step below.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 11 Oct 2026 to 10 Nov 2026 | £150 |
| 1 to 3 months late | 11 Nov 2026 to 10 Jan 2027 | £375 |
| 3 to 6 months late | 11 Jan 2027 to 10 Apr 2027 | £750 |
| More than 6 months late | From 11 Apr 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Feb 2027 | £200 |
| 3 months late | 30 Apr 2027 | another £200 |
| 6 months late | 31 Jul 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Jan 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
- 16175379
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 10 January 2025 (1 year ago)
- Registered office
- 3RD Floor, 86-90, Paul Street, London, EC2A 4NE
- Nature of business
- Window cleaning services (SIC 81221)
Specialised cleaning services (SIC 81222) - Year end
- 31 January (accounting reference date)
- Accounts type
- No accounts filed yet
- Last confirmation statement
- 10 April 2026
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.
- Mihran Limited2024
- Miles Better Detailing Limited2026
- Milla G5 Limited2005
- Millennium Cleantech Limited2025
- Miller & Shines Property Services Ltd2020
- Miller Cleans Ltd2021
- Millway Cleaning Services Ltd2020
- Mimi Cleaning Services Ltd2021
All cleaning companies in London · All trades in London · Cleaning companies across the UK
Frequently asked questions
When are Mighty Clean Windows Ltd's accounts due?
Mighty Clean Windows Ltd's accounts were due at Companies House on 10 October 2026 and the register shows them as overdue.
When is Mighty Clean Windows 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 9 January 2026, due by 9 January 2027, and one for the period to 31 January 2026, due by 31 January 2027. Corporation tax is payable 9 months and 1 day after the end of each.
Is Mighty Clean Windows Ltd still trading?
Mighty Clean Windows Ltd is listed as active on the Companies House register (checked 12 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 Mighty Clean Windows Ltd do?
Mighty Clean Windows Ltd is registered under Window cleaning services (SIC 81221); Specialised cleaning services (SIC 81222).
How old is Mighty Clean Windows Ltd?
Mighty Clean Windows Ltd was incorporated on 10 January 2025, 1 year ago.
What is the penalty if Mighty Clean Windows 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 Mighty Clean Windows Ltd on Companies House for filed documents, officers and the full history.
Based on the Companies House register (snapshot 1 Oct 2026, rechecked 12 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.