- Companies
- Plumbers and heating engineers
- Pwllheli
- M Wynn Plumbing Cyf
M Wynn Plumbing Cyf
- Company number
- 07316581
- Incorporated
- 15 Jul 201016 years trading
- Registered office
- 3 Kingshead Street, Pwllheli, Gwynedd, LL53 5DR
- Nature of business
- Plumbing, heat and air-conditioning installation
M Wynn Plumbing Cyf is a 16-year-old private limited company registered in Pwllheli, company number 07316581, one of 11 plumbing and heating companies in Pwllheli. Its next accounts are due at Companies House on 30 April 2027, and the CT600 for the period to 31 July 2026 is due at HMRC on 31 July 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 up £30K (+26.7%) on the year before, to £141K.
- Net assets rose in 5 of 5 year-on-year comparisons on record.
- 3 employees on average, up from 2 the year before.
- Balance sheets on record for 7 years, 2015 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Jul 2025 | £141K | £29K | 3 | ||
| 31 Jul 2024 | £111K | £24K | 2 | ||
| 31 Jul 2023 | £90K | £21K | 2 | ||
| 31 Jul 2022 | £64K | £22K | 2 | ||
| 31 Jul 2021 | £44K | £23K | |||
| 31 Jul 2016 | -£14K | £6,996 | £30K | ||
| 31 Jul 2015 | -£16K | £1,526 | £9,087 | £27K |
Where M Wynn Plumbing Cyf is registered
The registered office is in Pwllheli (LL53), in the Gwynedd local authority area, Wales. Show LL53 5DR on a map.
Other trade companies in LL53
- E Thomas Plumbing and Heating Plymio A Gwresogi CyfPlumbers and heating engineers
- Cadelio CyfSpecialist contractors
- Halpine Construction LimitedJoiners and carpenters
- Feucht Engineering LtdMachinery repair and installation
- Stuart Livingstone LtdPlumbers and heating engineers
- Teiars Hughes Tyres LtdMechanics and garages
- Saevar Solutions LtdCleaning companies
- Dragon Detailing & Body Repairs LtdMotor traders
Also registered at this address
5 other companies use the same registered office as M Wynn Plumbing Cyf.
- Bob Jones Windows Technician LimitedCleaning companies
- Cae Capel CyfProperty developers
- D & L Williams CyfPlasterers
- Stuart Livingstone LtdPlumbers and heating engineers
- T W Williams & Son LtdPlumbers and heating engineers
What happens if M Wynn Plumbing Cyf 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
- 07316581
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 15 July 2010 (16 years ago)
- Registered office
- 3 Kingshead Street, Pwllheli, Gwynedd, LL53 5DR
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 31 July (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 July 2025
- Last confirmation statement
- 8 March 2026
- Previous names
- Eryri Gas & Solar Ltd (until 26 Aug 2019)
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 Pwllheli
Other active plumbing and heating companies registered in Pwllheli.
- Malcolm Roberts Limited2006
- Mela Energy Ltd2020
- Stuart Livingstone Ltd2026
- T W Williams & Son Ltd2014
- Arwel W Williams Cyf2012
- Dyffryn Heating Ltd2022
- E Thomas Plumbing and Heating Plymio A Gwresogi Cyf2026
- G Jones Heating & Plumbing Ltd2007
All plumbing and heating companies in Pwllheli · All trades in Pwllheli · Plumbers and heating engineers across the UK
Frequently asked questions
When are M Wynn Plumbing Cyf's accounts due?
M Wynn Plumbing Cyf's next accounts are due at Companies House by 30 April 2027 (in 199 days), covering the period to 31 July 2026.
When is M Wynn Plumbing Cyf's CT600 due?
The CT600 for the period to 31 July 2026 is due at HMRC by 31 July 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 May 2027.
Is M Wynn Plumbing Cyf still trading?
M Wynn Plumbing Cyf 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 M Wynn Plumbing Cyf do?
M Wynn Plumbing Cyf is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is M Wynn Plumbing Cyf?
M Wynn Plumbing Cyf was incorporated on 15 July 2010, 16 years ago.
What is the penalty if M Wynn Plumbing Cyf 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 M Wynn Plumbing Cyf 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.