- Companies
- Plumbers and heating engineers
- Cardiff
- MLR Plumbing Limited
MLR Plumbing Limited
- Company number
- 16616451
- Incorporated
- 30 Jul 20251 year trading
- Registered office
- 4TH Floor 4TH Floor Museum Place, 14 Museum Place, Cardiff, Cardiff, CF10 3BH
- Nature of business
- Plumbing, heat and air-conditioning installation
MLR Plumbing Limited is a 1-year-old private limited company registered in Cardiff, company number 16616451, one of 170 plumbing and heating companies in Cardiff. Its next accounts are due at Companies House on 30 April 2027, and its first CT600 is due at HMRC on 29 July 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.
Is this your company?
File the first accounts to Companies House and the CT600 to HMRC yourself with A.X.E.L Filing. One set of questions, both filings, £49 flat. No accountant, no subscription.
File for MLR Plumbing LimitedOr get a reminder before each deadline
Free. We email you 60, 30, 14, 7 and 1 days before the accounts, CT600 and confirmation statement are due. Unsubscribe in one click.
Financial snapshot, 2026
From the balance sheet at 31 July 2026, as filed at Companies House.
Where MLR Plumbing Limited is registered
The registered office is in Cardiff (CF10), in the Cardiff local authority area, Wales. Show CF10 3BH on a map.
Other trade companies in CF10
- Hudcon LtdBuilders
- Skyline Pitched and Flat Roofing LtdRoofers
- Eclipse Construction Group LtdPlasterers
- DWR Plumbing LtdPlumbers and heating engineers
- CF Glazing LtdGlaziers
- Regency Construction Group LtdProperty developers
- Qproperty Solutions LimitedFinishing trades
- Express Vehicle Services (Cardiff) LimitedMechanics and garages
What happens if MLR Plumbing 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 30 April 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 May 2027 to 31 May 2027 | £150 |
| 1 to 3 months late | 1 Jun 2027 to 31 Jul 2027 | £375 |
| 3 to 6 months late | 1 Aug 2027 to 31 Oct 2027 | £750 |
| More than 6 months late | From 1 Nov 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Aug 2027 | £200 |
| 3 months late | 31 Oct 2027 | another £200 |
| 6 months late | 31 Jan 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Jul 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
- 16616451
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 30 July 2025 (1 year ago)
- Registered office
- 4TH Floor 4TH Floor Museum Place, 14 Museum Place, Cardiff, Cardiff, CF10 3BH
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 31 July (accounting reference date)
- Accounts type
- No accounts filed yet
- Last confirmation statement
- 29 July 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.
- MMK Mechanical Ltd2020
- MPH Installations Ltd2018
- MR Builder MH Ltd2024
- 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
All plumbing and heating companies in Cardiff · All trades in Cardiff · Plumbers and heating engineers across the UK
Frequently asked questions
When are MLR Plumbing Limited's accounts due?
MLR Plumbing Limited's next accounts are due at Companies House by 30 April 2027 (in 199 days), covering the period to 31 July 2026.
When is MLR Plumbing Limited's CT600 due?
The first accounts cover more than 12 months, so there are two Company Tax Returns: one for the 12 months to 29 July 2026, due by 29 July 2027, and one for the period to 31 July 2026, due by 31 July 2027. Corporation tax is payable 9 months and 1 day after the end of each.
Is MLR Plumbing Limited still trading?
MLR Plumbing 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 MLR Plumbing Limited do?
MLR Plumbing Limited is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is MLR Plumbing Limited?
MLR Plumbing Limited was incorporated on 30 July 2025, 1 year ago.
What is the penalty if MLR Plumbing 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 MLR Plumbing 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.