- Company number
- 14631224
- Incorporated
- 1 Feb 20233 years trading
- Registered office
- 22 Cotswold Drive, Waltham, Grimsby, DN37 0EA
- Nature of business
- Glazing
Mark Thomas Window Maintenance Limited is a 3-year-old private limited company registered in Grimsby, company number 14631224, one of 16 glazing companies in Grimsby. Its next accounts are due at Companies House on 26 November 2026, and the CT600 for the period to 26 February 2026 is due at HMRC on 26 February 2027.
Key dates
Worked out from the year end and filing history on the Companies House register.
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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 down £3,054 (-22.2%) on the year before, to £11K.
- Current assets of £3,553 against £3,386 owed within a year: 1.0 times cover.
- 1 employee on average during the year.
- Balance sheets on record for 3 years, 2024 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 28 Feb 2025 | £11K | £3,553 | £3,386 | 1 | |
| 28 Feb 2024 | £14K | £1,368 | £785 | 1 | |
| 27 Feb 2024 | £14K | £1,368 | £785 | 1 |
Where Mark Thomas Window Maintenance Limited is registered
The registered office is in Grimsby (DN37), in the North East Lincolnshire local authority area, Yorkshire and The Humber. Show DN37 0EA on a map.
Other trade companies in DN37
- Cwind.Thompson LtdInstallers
- MC Real Estate Group LtdProperty developers
- JM Industrial Services LtdMachinery repair and installation
- Ben Wilkins Building & Engineering LtdFinishing trades
- BD Roofing and Renewables LtdBuilders
- J S Foster Developments LtdProperty developers
- At Valets LtdMechanics and garages
- Van Equip LtdMotor traders
What happens if Mark Thomas Window Maintenance 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 26 November 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 27 Nov 2026 to 26 Dec 2026 | £150 |
| 1 to 3 months late | 27 Dec 2026 to 26 Feb 2027 | £375 |
| 3 to 6 months late | 27 Feb 2027 to 26 May 2027 | £750 |
| More than 6 months late | From 27 May 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 27 Feb 2027 | £200 |
| 3 months late | 26 May 2027 | another £200 |
| 6 months late | 26 Aug 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 26 Feb 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
- 14631224
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 1 February 2023 (3 years ago)
- Registered office
- 22 Cotswold Drive, Waltham, Grimsby, DN37 0EA
- Nature of business
- Glazing (SIC 43342)
- Year end
- 26 February (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 28 February 2025
- Last confirmation statement
- 31 January 2026
Filing notes for glazing companies
Glazing companies often take deposits before work starts. Deposits held at the year end are a liability, not income, until the job is done.
Similar companies in Grimsby
Other active glazing companies registered in Grimsby.
- Picture Windows (Lincs) Limited2011
- Pinnacle Home Improvements (Lincs) Limited2009
- R. K. UPVC Window Repairs Limited2015
- S Rawlins Double Glazing Limited2002
- Safe and Secure Limited1996
- Salamander Property Maintenance Limited2011
- Spire Windows Systems Ltd1999
- Steve Keightley Window Company Limited2002
All glazing companies in Grimsby · All trades in Grimsby · Glaziers across the UK
Frequently asked questions
When are Mark Thomas Window Maintenance Limited's accounts due?
Mark Thomas Window Maintenance Limited's next accounts are due at Companies House by 26 November 2026 (in 45 days), covering the period to 26 February 2026.
When is Mark Thomas Window Maintenance Limited's CT600 due?
The CT600 for the period to 26 February 2026 is due at HMRC by 26 February 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 27 November 2026.
Is Mark Thomas Window Maintenance Limited still trading?
Mark Thomas Window Maintenance 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 Mark Thomas Window Maintenance Limited do?
Mark Thomas Window Maintenance Limited is registered under Glazing (SIC 43342).
How old is Mark Thomas Window Maintenance Limited?
Mark Thomas Window Maintenance Limited was incorporated on 1 February 2023, 3 years ago.
What is the penalty if Mark Thomas Window Maintenance 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 Mark Thomas Window Maintenance 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.