- Companies
- Builders
- Thornton Heath
- M.K & Sons Builders Limited
M.K & Sons Builders Limited
- Company number
- 15743021
- Incorporated
- 26 May 20242 years trading
- Registered office
- 5-7 High Street, Thornton Heath, CR7 8RU
- Nature of business
- Construction of commercial buildings; Construction of domestic buildings
M.K & Sons Builders Limited is a 2-year-old private limited company registered in Thornton Heath, company number 15743021, one of 111 building contractors in Thornton Heath. Its next accounts are due at Companies House on 28 February 2027, and the CT600 for the period to 31 May 2026 is due at HMRC on 31 May 2027.
Key dates
Worked out from the year end and filing history on the Companies House register.
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Financial snapshot, 2025
From the balance sheet at 31 May 2025, as filed at Companies House.
Where M.K & Sons Builders Limited is registered
The registered office is in Thornton Heath (CR7), in the Croydon local authority area, London. Show CR7 8RU on a map.
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Also registered at this address
1 other company uses the same registered office as M.K & Sons Builders Limited.
- GH Merchants LimitedFinishing trades
What happens if M.K & Sons Builders 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 28 February 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Mar 2027 to 31 Mar 2027 | £150 |
| 1 to 3 months late | 1 Apr 2027 to 31 May 2027 | £375 |
| 3 to 6 months late | 1 Jun 2027 to 31 Aug 2027 | £750 |
| More than 6 months late | From 1 Sep 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jun 2027 | £200 |
| 3 months late | 31 Aug 2027 | another £200 |
| 6 months late | 30 Nov 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 May 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
- 15743021
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 26 May 2024 (2 years ago)
- Registered office
- 5-7 High Street, Thornton Heath, CR7 8RU
- Nature of business
- Construction of commercial buildings (SIC 41201)
Construction of domestic buildings (SIC 41202) - Year end
- 31 May (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 May 2025
- Last confirmation statement
- 25 May 2026
Filing notes for building contractors
Building companies often run the Construction Industry Scheme as a contractor, a subcontractor or both. CIS deductions suffered during the year are set against the PAYE bill, and any unrecovered balance at the year end matters when the accounts are drawn up.
Similar companies in Thornton Heath
Other active building contractors registered in Thornton Heath.
- Ma Building Construction Company Limited2026
- Ma&Bro Limited2026
- Max Builder Ltd2012
- Mbuilding Ltd2020
- MC Fix Ltd2018
- Meetoria Homes Limited2026
- Miraya Contractors Limited2023
- MJSP Ltd2025
All building contractors in Thornton Heath · All trades in Thornton Heath · Builders across the UK
Frequently asked questions
When are M.K & Sons Builders Limited's accounts due?
M.K & Sons Builders Limited's next accounts are due at Companies House by 28 February 2027 (in 138 days), covering the period to 31 May 2026.
When is M.K & Sons Builders Limited's CT600 due?
The CT600 for the period to 31 May 2026 is due at HMRC by 31 May 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 March 2027.
Is M.K & Sons Builders Limited still trading?
M.K & Sons Builders 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 M.K & Sons Builders Limited do?
M.K & Sons Builders Limited is registered under Construction of commercial buildings (SIC 41201); Construction of domestic buildings (SIC 41202).
How old is M.K & Sons Builders Limited?
M.K & Sons Builders Limited was incorporated on 26 May 2024, 2 years ago.
What is the penalty if M.K & Sons Builders 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 M.K & Sons Builders 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.