- Companies
- Plumbers and heating engineers
- Cardiff
- MDP Mechanical Services Limited
MDP Mechanical Services Limited
- Company number
- 08408638
- Incorporated
- 19 Feb 201313 years trading
- Registered office
- 33 Swanage Close, ST. Mellons, Cardiff, CF3 0LS
- Nature of business
- Plumbing, heat and air-conditioning installation
MDP Mechanical Services Limited is a 13-year-old private limited company registered in Cardiff, company number 08408638, one of 170 plumbing and heating companies in Cardiff. 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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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 £8,544 (-20.6%) on the year before, to -£50K.
- Net assets rose in 4 of 9 year-on-year comparisons on record.
- Current assets of £32K against £109K owed within a year: 0.3 times cover.
- 4 employees on average during the year.
- Balance sheets on record for 10 years, 2016 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 May 2025 | -£50K | £32K | £109K | 4 | |
| 31 May 2024 | -£41K | £23K | £102K | 4 | |
| 31 May 2023 | £11K | £31K | £59K | 5 | |
| 31 May 2022 | £4,952 | £22K | £67K | 5 | |
| 31 May 2021 | £61K | £78K | £62K | 5 | |
| 31 May 2020 | £1 | £25K | £39K | 5 | |
| 31 May 2019 | £56K | £53K | £12K | 6 | |
| 31 May 2018 | £88K | £266K | £199K | ||
| 31 May 2017 | £12K | £36K | £28K | ||
| 28 Feb 2016 | £1 |
Where MDP Mechanical Services Limited is registered
The registered office is in Cardiff (CF3), in the Cardiff local authority area, Wales. Show CF3 0LS on a map.
Other trade companies in CF3
- Ions Trade & Projects LtdInstallers
- Fly Tech LtdMachinery repair and installation
- Dragonfly Site Services LtdSpecialist contractors
- Arc Energy Systems LtdElectricians
- Floyd’S Consultants LtdProperty developers
- Blues Mechanical LtdInstallers
- Climate Control Cardiff LtdPlumbers and heating engineers
- Campo & Co Developments LtdBuilders
What happens if MDP Mechanical Services 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
- 08408638
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 19 February 2013 (13 years ago)
- Registered office
- 33 Swanage Close, ST. Mellons, Cardiff, CF3 0LS
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 31 May (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 May 2025
- Last confirmation statement
- 19 February 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.
- Metric Interior Systems Ltd2019
- MG Heating & Plumbing Services Ltd2026
- MLR Plumbing Limited2025
- MMK Mechanical Ltd2020
- MPH Installations Ltd2018
- MR Builder MH Ltd2024
- Multi-Fix Property Maintenance Ltd.2025
- N J Harkus Plumbing and Heating Limited2013
All plumbing and heating companies in Cardiff · All trades in Cardiff · Plumbers and heating engineers across the UK
Frequently asked questions
When are MDP Mechanical Services Limited's accounts due?
MDP Mechanical Services Limited's next accounts are due at Companies House by 28 February 2027 (in 139 days), covering the period to 31 May 2026.
When is MDP Mechanical Services 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 MDP Mechanical Services Limited still trading?
MDP Mechanical Services 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 MDP Mechanical Services Limited do?
MDP Mechanical Services Limited is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is MDP Mechanical Services Limited?
MDP Mechanical Services Limited was incorporated on 19 February 2013, 13 years ago.
What is the penalty if MDP Mechanical Services 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 MDP Mechanical Services 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.