- Companies
- Plumbers and heating engineers
- Luton
- MST Builders Ltd
MST Builders Ltd
- Company number
- 16863150
- Incorporated
- 17 Nov 2025
- Registered office
- 3 Brooms Road, Luton, Bedfordshire, LU2 0JP
- Nature of business
- Plumbing, heat and air-conditioning installation; Other construction installation; Plastering; Floor and wall covering
MST Builders Ltd is a newly incorporated private limited company registered in Luton, company number 16863150, one of 158 plumbing and heating companies in Luton. Its next accounts are due at Companies House on 17 August 2027, and its first CT600 is due at HMRC on 16 November 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.
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Where MST Builders Ltd is registered
The registered office is in Luton (LU2), in the Luton local authority area, East of England. Show LU2 0JP on a map.
Other trade companies in LU2
- Arihant Property Solutions LtdProperty developers
- Prime Pest and Clean LimitedCleaning companies
- QVP Construction LtdBuilders
- Krozy Cleaninig Services LtdCleaning companies
- Iron Clad Construction Devon LimitedBuilders
- Tmi Motors LimitedMechanics and garages
- Scorpion Recovery LtdMechanics and garages
- Cos Plastering LtdBuilders
What happens if MST Builders 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 17 August 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 18 Aug 2027 to 17 Sep 2027 | £150 |
| 1 to 3 months late | 18 Sep 2027 to 17 Nov 2027 | £375 |
| 3 to 6 months late | 18 Nov 2027 to 17 Feb 2028 | £750 |
| More than 6 months late | From 18 Feb 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Dec 2027 | £200 |
| 3 months late | 29 Feb 2028 | another £200 |
| 6 months late | 30 May 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Nov 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
- 16863150
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 17 November 2025
- Registered office
- 3 Brooms Road, Luton, Bedfordshire, LU2 0JP
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
Other construction installation (SIC 43290)
Plastering (SIC 43310)
Floor and wall covering (SIC 43330) - Year end
- 30 November (accounting reference date)
- Accounts type
- No accounts filed yet
Filing notes for plumbing and heating companies
Plumbing and heating companies frequently work under CIS for main contractors and also directly for homeowners, so turnover can mix CIS and non-CIS income.
Similar companies in Luton
Other active plumbing and heating companies registered in Luton.
- Myflame Plumbing & Heating Limited2023
- Neat Heat UK Ltd2018
- Neatheat Plumbing & Heating Ltd2021
- Novoflow Solutions Ltd2025
- Ny Electricals Ltd2025
- Optiflow Mechanical Ltd2025
- Optimise Heating Solutions Ltd2021
- Paulgas Limited2016
All plumbing and heating companies in Luton · All trades in Luton · Plumbers and heating engineers across the UK
Frequently asked questions
When are MST Builders Ltd's accounts due?
MST Builders Ltd's next accounts are due at Companies House by 17 August 2027 (in 308 days), covering the period to 30 November 2026.
When is MST Builders 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 16 November 2026, due by 16 November 2027, and one for the period to 30 November 2026, due by 30 November 2027. Corporation tax is payable 9 months and 1 day after the end of each.
Is MST Builders Ltd still trading?
MST Builders 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 MST Builders Ltd do?
MST Builders Ltd is registered under Plumbing, heat and air-conditioning installation (SIC 43220); Other construction installation (SIC 43290); Plastering (SIC 43310); Floor and wall covering (SIC 43330).
How old is MST Builders Ltd?
MST Builders Ltd was incorporated on 17 November 2025, less than a year ago.
What is the penalty if MST Builders 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 MST Builders 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.