- Companies
- Cleaning companies
- Stevenage
- MJM Windows Limited
MJM Windows Limited
- Company number
- 13110627
- Incorporated
- 4 Jan 20215 years trading
- Registered office
- 129B High Street, Stevenage, SG1 3HS
- Nature of business
- Window cleaning services
MJM Windows Limited is a 5-year-old private limited company registered in Stevenage, company number 13110627, one of 71 cleaning companies in Stevenage. Its next accounts are due at Companies House on 31 October 2026, and the CT600 for the period to 31 January 2026 is due at HMRC on 31 January 2027.
Key dates
Worked out from the year end and filing history on the Companies House register.
Is this your company?
File the 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 MJM Windows LimitedOr 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.
Finances
From each year's balance sheet filed at Companies House. Small companies do not have to publish turnover or profit, so these are balance sheet figures.
- Net assets up £12K (+149.7%) on the year before, to £20K.
- Net assets rose in 2 of 3 year-on-year comparisons on record.
- 1 employee on average during the year.
- Balance sheets on record for 4 years, 2022 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Jan 2025 | £20K | £23K | £4,582 | 1 | |
| 31 Jan 2024 | £8,108 | £8,403 | £2,968 | 1 | |
| 31 Jan 2023 | £4,814 | £3,513 | £2,263 | 1 | |
| 31 Jan 2022 | £5,487 | £1,876 | £1,141 | 1 |
Where MJM Windows Limited is registered
The registered office is in Stevenage (SG1), in the Stevenage local authority area, East of England. Show SG1 3HS on a map.
Other trade companies in SG1
- Masterplumbing&Heating LtdPlumbers and heating engineers
- Ohiggins Property Solutions LtdProperty developers
- Bird Detailing LtdCleaning companies
- Tedted Engineering LtdMechanics and garages
- DSS Facilities LtdFacilities management
- Macala Engineering LimitedSpecialist contractors
- Regency Detailing LtdMechanics and garages
- Ashtons Property Group LtdProperty developers
Also registered at this address
13 other companies use the same registered office as MJM Windows Limited.
- Aircraft Support Solutions LtdMachinery repair and installation
- Ardentpower LtdElectricians
- Ashby Plastering Services LimitedPlasterers
- JLG Ventures LtdElectricians
- JWB Arb LtdProperty developers
- Landsend Property LtdProperty developers
- MCT Construction LimitedJoiners and carpenters
- Pinnacle Plumbers & Heating LtdPlumbers and heating engineers
- Priority Heating LimitedPlumbers and heating engineers
- Scaff-Hire Services Ltd.Scaffolders
- TJ Groundworks and Civils LtdProperty developers
- Urbanstyle Building Services LimitedFinishing trades
- Whitney Property Consultants LtdProperty developers
What happens if MJM Windows 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 31 October 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Nov 2026 to 30 Nov 2026 | £150 |
| 1 to 3 months late | 1 Dec 2026 to 31 Jan 2027 | £375 |
| 3 to 6 months late | 1 Feb 2027 to 30 Apr 2027 | £750 |
| More than 6 months late | From 1 May 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
- 13110627
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 4 January 2021 (5 years ago)
- Registered office
- 129B High Street, Stevenage, SG1 3HS
- Nature of business
- Window cleaning services (SIC 81221)
- Year end
- 31 January (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 January 2025
- Last confirmation statement
- 3 January 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 Stevenage
Other active cleaning companies registered in Stevenage.
- Moella's Touch Ltd2025
- NH the Window Cleaners Ltd2024
- Officeduster Ltd2024
- Ojj Cleaning Ltd2022
- Oranjade Ltd2020
- Osprey Cleaning Group Ltd2026
- Oziclean Ltd2021
- Payne’S Pressure Washing and Roof Care Ltd2026
All cleaning companies in Stevenage · All trades in Stevenage · Cleaning companies across the UK
Frequently asked questions
When are MJM Windows Limited's accounts due?
MJM Windows Limited's next accounts are due at Companies House by 31 October 2026 (in 18 days), covering the period to 31 January 2026.
When is MJM Windows Limited's CT600 due?
The CT600 for the period to 31 January 2026 is due at HMRC by 31 January 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 November 2026.
Is MJM Windows Limited still trading?
MJM Windows 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 MJM Windows Limited do?
MJM Windows Limited is registered under Window cleaning services (SIC 81221).
How old is MJM Windows Limited?
MJM Windows Limited was incorporated on 4 January 2021, 5 years ago.
What is the penalty if MJM Windows 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 MJM Windows 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.