- Companies
- Plumbers and heating engineers
- Milford Haven
- Mark Wilson Plumbing Limited
Mark Wilson Plumbing Limited
- Company number
- 10177790
- Incorporated
- 12 May 201610 years trading
- Registered office
- 14 Alban Crescent, Waterston, Milford Haven, Pembrokeshire, SA73 1DY
- Nature of business
- Plumbing, heat and air-conditioning installation
Mark Wilson Plumbing Limited is a 10-year-old private limited company registered in Milford Haven, company number 10177790, one of 9 plumbing and heating companies in Milford Haven. Its next accounts are due at Companies House on 31 March 2027, and the CT600 for the period to 30 June 2026 is due at HMRC on 30 June 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 unchanged on the year before, at £100.
- Net assets rose in 0 of 8 year-on-year comparisons on record.
- No employees reported for the latest year (directors are often not counted as employees).
- Balance sheets on record for 9 years, 2017 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 30 Jun 2025 | £100 | £100 | £0 | 0 | |
| 30 Jun 2024 | £100 | £100 | £0 | 1 | |
| 30 Jun 2023 | £100 | £100 | £0 | 1 | |
| 30 Jun 2022 | £100 | £100 | £0 | 1 | |
| 31 Mar 2021 | £100 | £100 | £0 | 0 | |
| 31 Mar 2020 | £100 | £100 | £0 | 0 | |
| 31 Mar 2019 | £100 | £100 | £0 | ||
| 31 Mar 2018 | £100 | £100 | £0 | ||
| 31 Mar 2017 | £100 | £100 | £0 |
Where Mark Wilson Plumbing Limited is registered
The registered office is in Milford Haven (SA73), in the Pembrokeshire local authority area, Wales. Show SA73 1DY on a map.
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- MR GS Mobile Tyres LtdMechanics and garages
- WBG Facilities LimitedScaffolders
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Also registered at this address
1 other company uses the same registered office as Mark Wilson Plumbing Limited.
- Mark Wilson & Son Plumbing LimitedPlumbers and heating engineers
What happens if Mark Wilson 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 31 March 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Apr 2027 to 30 Apr 2027 | £150 |
| 1 to 3 months late | 1 May 2027 to 30 Jun 2027 | £375 |
| 3 to 6 months late | 1 Jul 2027 to 30 Sep 2027 | £750 |
| More than 6 months late | From 1 Oct 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jul 2027 | £200 |
| 3 months late | 30 Sep 2027 | another £200 |
| 6 months late | 30 Dec 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Jun 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
- 10177790
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 12 May 2016 (10 years ago)
- Registered office
- 14 Alban Crescent, Waterston, Milford Haven, Pembrokeshire, SA73 1DY
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 30 June (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 30 June 2025
- Last confirmation statement
- 16 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 Milford Haven
Other active plumbing and heating companies registered in Milford Haven.
- All-Ways Stainless Services Limited2007
- Bristow Refrigeration Ltd2024
- First Rate Home Services Ltd2022
- Flotech-Wales Ltd2025
- Jarred Campbell Plumbing and Heating Ltd2023
- KT'S Bathroom Adaptations Limited2026
- Leak in Limited2019
- Mark Wilson & Son Plumbing Limited2025
All plumbing and heating companies in Milford Haven · All trades in Milford Haven · Plumbers and heating engineers across the UK
Frequently asked questions
When are Mark Wilson Plumbing Limited's accounts due?
Mark Wilson Plumbing Limited's next accounts are due at Companies House by 31 March 2027 (in 169 days), covering the period to 30 June 2026.
When is Mark Wilson Plumbing Limited's CT600 due?
The CT600 for the period to 30 June 2026 is due at HMRC by 30 June 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 April 2027.
Is Mark Wilson Plumbing Limited still trading?
Mark Wilson 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 Mark Wilson Plumbing Limited do?
Mark Wilson Plumbing Limited is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is Mark Wilson Plumbing Limited?
Mark Wilson Plumbing Limited was incorporated on 12 May 2016, 10 years ago.
What is the penalty if Mark Wilson 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 Mark Wilson 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.