- Companies
- Plumbers and heating engineers
- Biggin Hill
- MK & Sons Ac Property Services Ltd
MK & Sons Ac Property Services Ltd
- Company number
- 15062757
- Incorporated
- 10 Aug 20233 years trading
- Registered office
- 54 Kingsmead, Biggin Hill, Kent, TN16 3UE
- Nature of business
- Plumbing, heat and air-conditioning installation
MK & Sons Ac Property Services Ltd is a 3-year-old private limited company registered in Biggin Hill, company number 15062757, one of the UK's plumbing and heating companies. Companies House shows its accounts as overdue: they were due on 31 August 2026.
Key dates
Worked out from the year end and filing history on the Companies House register.
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Where MK & Sons Ac Property Services Ltd is registered
The registered office is in Biggin Hill (TN16), in the Bromley local authority area, London. Show TN16 3UE on a map.
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What happens if MK & Sons Ac Property Services Ltd files late
If the accounts reach Companies House today, the late filing penalty is £375 (£750 if last year's accounts were also late). It rises at each step below.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Sep 2026 to 30 Sep 2026 | £150 |
| 1 to 3 months late | 1 Oct 2026 to 30 Nov 2026 | £375 |
| 3 to 6 months late | 1 Dec 2026 to 28 Feb 2027 | £750 |
| More than 6 months late | From 1 Mar 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Dec 2026 | £200 |
| 3 months late | 28 Feb 2027 | another £200 |
| 6 months late | 30 May 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Nov 2027 | 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
- 15062757
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 10 August 2023 (3 years ago)
- Registered office
- 54 Kingsmead, Biggin Hill, Kent, TN16 3UE
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 31 August (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 August 2024
- Last confirmation statement
- 1 August 2025
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 Biggin Hill
Other active plumbing and heating companies registered in Biggin Hill.
- R . Thorpe Heating and Plumbing Ltd2017
- Intercept Plumbing and Drainage Limited2016
- J.B. Maintenance (South) Limited2000
All plumbing and heating companies in Biggin Hill · All trades in Biggin Hill · Plumbers and heating engineers across the UK
Frequently asked questions
When are MK & Sons Ac Property Services Ltd's accounts due?
MK & Sons Ac Property Services Ltd's accounts were due at Companies House on 31 August 2026 and the register shows them as overdue.
When is MK & Sons Ac Property Services 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 31 August 2025, due by 31 August 2026, and one for the period to 30 November 2025, due by 30 November 2026. Corporation tax is payable 9 months and 1 day after the end of each.
Is MK & Sons Ac Property Services Ltd still trading?
MK & Sons Ac Property Services Ltd is listed as active on the Companies House register (checked 13 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 MK & Sons Ac Property Services Ltd do?
MK & Sons Ac Property Services Ltd is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is MK & Sons Ac Property Services Ltd?
MK & Sons Ac Property Services Ltd was incorporated on 10 August 2023, 3 years ago.
What is the penalty if MK & Sons Ac Property Services 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 MK & Sons Ac Property Services Ltd on Companies House for filed documents, officers and the full history.
Based on the Companies House register (snapshot 1 Oct 2026, rechecked 13 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.