- Companies
- Plumbers and heating engineers
- Cardiff
- MR Builder MH Ltd
MR Builder MH Ltd
- Company number
- 15436726
- Incorporated
- 23 Jan 20242 years trading
- Registered office
- 191 Cowbridga Road East, Cardiff, Cardiff, CF11 9AJ
- Nature of business
- Plumbing, heat and air-conditioning installation; Floor and wall covering; Other building completion and finishing
MR Builder MH Ltd is a 2-year-old private limited company registered in Cardiff, company number 15436726, one of 170 plumbing and heating companies in Cardiff. Its next accounts are due at Companies House on 31 October 2027, and the CT600 for the period to 31 January 2027 is due at HMRC on 31 January 2028.
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 £1,075 on the year before, to -£1,016.
- Current assets of £1,873 against £2,589 owed within a year: 0.7 times cover.
- No employees reported for the latest year (directors are often not counted as employees).
- Balance sheets on record for 2 years, 2025 to 2026.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Jan 2026 | -£1,016 | £1,873 | £2,589 | 0 | |
| 31 Jan 2025 | £59 | £157 | £98 | 1 |
Where MR Builder MH Ltd is registered
The registered office is in Cardiff (CF11), in the Cardiff local authority area, Wales. Show CF11 9AJ on a map.
Other trade companies in CF11
- DRK Car Sales LimitedMotor traders
- Daily Catering Repairs LtdMachinery repair and installation
- R S Tyres LtdMotor traders
- Cronyx Solutions LimitedBuilders
- Ali Construction Services UK LtdBuilders
- Crown Damp Proofing LtdSpecialist contractors
- Time for You Cardiff LtdCleaning companies
- Logistfix LtdRepair services
What happens if MR Builder MH 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 October 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Nov 2027 to 30 Nov 2027 | £150 |
| 1 to 3 months late | 1 Dec 2027 to 31 Jan 2028 | £375 |
| 3 to 6 months late | 1 Feb 2028 to 30 Apr 2028 | £750 |
| More than 6 months late | From 1 May 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Feb 2028 | £200 |
| 3 months late | 30 Apr 2028 | another £200 |
| 6 months late | 31 Jul 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Jan 2029 | 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
- 15436726
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 23 January 2024 (2 years ago)
- Registered office
- 191 Cowbridga Road East, Cardiff, Cardiff, CF11 9AJ
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
Floor and wall covering (SIC 43330)
Other building completion and finishing (SIC 43390) - Year end
- 31 January (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 January 2026
- Last confirmation statement
- 22 January 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 Cardiff
Other active plumbing and heating companies registered in Cardiff.
- Multi-Fix Property Maintenance Ltd.2025
- N J Harkus Plumbing and Heating Limited2013
- N.E.C. Plumbing and Heating Limited2005
- Nationwide Retrofit Ltd2014
- North Plumbing and Heating Cardiff Ltd2023
- Nova Plumbers Ltd2024
- Olympus Home Solutions Limited2021
- Ontheblink Limited2022
All plumbing and heating companies in Cardiff · All trades in Cardiff · Plumbers and heating engineers across the UK
Frequently asked questions
When are MR Builder MH Ltd's accounts due?
MR Builder MH Ltd's next accounts are due at Companies House by 31 October 2027 (in 384 days), covering the period to 31 January 2027.
When is MR Builder MH Ltd's CT600 due?
The CT600 for the period to 31 January 2027 is due at HMRC by 31 January 2028, 12 months after the period end. The corporation tax itself is payable earlier, by 1 November 2027.
Is MR Builder MH Ltd still trading?
MR Builder MH 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 MR Builder MH Ltd do?
MR Builder MH Ltd is registered under Plumbing, heat and air-conditioning installation (SIC 43220); Floor and wall covering (SIC 43330); Other building completion and finishing (SIC 43390).
How old is MR Builder MH Ltd?
MR Builder MH Ltd was incorporated on 23 January 2024, 2 years ago.
What is the penalty if MR Builder MH 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 MR Builder MH 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.