- Companies
- Plumbers and heating engineers
- Milton Keynes
- Mas Installations MK Ltd
Mas Installations MK Ltd
- Company number
- 15648496
- Incorporated
- 15 Apr 20242 years trading
- Registered office
- 129 ST. Johns Road, Bletchley, Milton Keynes, MK3 5DZ
- Nature of business
- Plumbing, heat and air-conditioning installation; Other building completion and finishing
Mas Installations MK Ltd is a 2-year-old private limited company registered in Milton Keynes, company number 15648496, one of 197 plumbing and heating companies in Milton Keynes. Its next accounts are due at Companies House on 31 January 2027, and the CT600 for the period to 30 April 2026 is due at HMRC on 30 April 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 30 April 2025, as filed at Companies House. Negative net assets mean the company owed more than it owned at that date.
Where Mas Installations MK Ltd is registered
The registered office is in Milton Keynes (MK3), in the Milton Keynes local authority area, South East. Show MK3 5DZ on a map.
Other trade companies in MK3
- Sas Tiling Services LtdFloor and wall tilers
- Hoichuk LtdLandscapers and gardeners
- Stokes Properties and Renovations LimitedFinishing trades
- All Pro Contractors LimitedRoofers
- MK Power Factor LtdElectricians
- LWM Electrical LtdElectricians
- Deep Clean Top Car Wash LtdCleaning companies
- Savitar Construction LtdProperty developers
What happens if Mas Installations MK 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 31 January 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Feb 2027 to 28 Feb 2027 | £150 |
| 1 to 3 months late | 1 Mar 2027 to 30 Apr 2027 | £375 |
| 3 to 6 months late | 1 May 2027 to 31 Jul 2027 | £750 |
| More than 6 months late | From 1 Aug 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 May 2027 | £200 |
| 3 months late | 30 Jul 2027 | another £200 |
| 6 months late | 30 Oct 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Apr 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
- 15648496
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 15 April 2024 (2 years ago)
- Registered office
- 129 ST. Johns Road, Bletchley, Milton Keynes, MK3 5DZ
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
Other building completion and finishing (SIC 43390) - Year end
- 30 April (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 30 April 2025
- Last confirmation statement
- 1 April 2026
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 Milton Keynes
Other active plumbing and heating companies registered in Milton Keynes.
- Mauger Brothers Limited2025
- Maxas Plumbing and Heating Ltd2025
- MB Plumbing & Facilities Ltd2026
- Mercury Heat Solutions Limited2011
- MGS Plumbing & Heating Solutions Limited2021
- Mick Wood Heating Services Limited2004
- Milton Keynes Plumbing & Heating Services Ltd2022
- Milton Keynes Plumbing & Heating Solutions Limited2024
All plumbing and heating companies in Milton Keynes · All trades in Milton Keynes · Plumbers and heating engineers across the UK
Frequently asked questions
When are Mas Installations MK Ltd's accounts due?
Mas Installations MK Ltd's next accounts are due at Companies House by 31 January 2027 (in 110 days), covering the period to 30 April 2026.
When is Mas Installations MK Ltd's CT600 due?
The CT600 for the period to 30 April 2026 is due at HMRC by 30 April 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 February 2027.
Is Mas Installations MK Ltd still trading?
Mas Installations MK 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 Mas Installations MK Ltd do?
Mas Installations MK Ltd is registered under Plumbing, heat and air-conditioning installation (SIC 43220); Other building completion and finishing (SIC 43390).
How old is Mas Installations MK Ltd?
Mas Installations MK Ltd was incorporated on 15 April 2024, 2 years ago.
What is the penalty if Mas Installations MK 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 Mas Installations MK 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.