- Companies
- Plumbers and heating engineers
- Porthmadog
- Elis Llywelyn Williams Cyf
Elis Llywelyn Williams Cyf
- Company number
- 13920448
- Incorporated
- 16 Feb 20224 years trading
- Registered office
- ST. Davids Building, Lombard Street, Porthmadog, LL49 9AP
- Nature of business
- Plumbing, heat and air-conditioning installation
Elis Llywelyn Williams Cyf is a 4-year-old private limited company registered in Porthmadog, company number 13920448, one of 6 plumbing and heating companies in Porthmadog. Its next accounts are due at Companies House on 30 November 2026, and the CT600 for the period to 28 February 2026 is due at HMRC on 28 February 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 £708 (-43%) on the year before, to £939.
- Current assets of £36K against £44K owed within a year: 0.8 times cover.
- 1 employee on average during the year.
- Balance sheets on record for 3 years, 2023 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 28 Feb 2025 | £939 | £19K | £36K | £44K | 1 |
| 29 Feb 2024 | £1,647 | £14K | £20K | £29K | 1 |
| 28 Feb 2023 | £267 | £2,703 | £21K | £29K | 1 |
Where Elis Llywelyn Williams Cyf is registered
The registered office is in Porthmadog (LL49), in the Gwynedd local authority area, Wales. Show LL49 9AP on a map.
Other trade companies in LL49
- D.Thomas Electrical CyfElectricians
- N Commercial LtdMotor traders
- Bricsan CyfProperty developers
- White Diamond Windows LtdGlaziers
- Porthmadog No1 Hand Car Wash LtdCleaning companies
- Dragon Drone Surveys & Inspections LimitedGroundworks and demolition
- Cu Power LtdMachinery repair and installation
- Carwyn Ap Plymio A Gwresogi CyfPlumbers and heating engineers
Also registered at this address
13 other companies use the same registered office as Elis Llywelyn Williams Cyf.
- B & S Siting LimitedInstallers
- Bricsan CyfProperty developers
- Carwyn Ap Plymio A Gwresogi CyfPlumbers and heating engineers
- D.Thomas Electrical CyfElectricians
- E H A'i Fab Ynni Adnewyddadol & Trydanol CyfElectricians
- E.Jones Williams and Son LimitedProperty developers
- Ffenestri Dwyfor Windows CyfGlaziers
- G Jones Contracts LimitedSpecialist contractors
- N Commercial LtdMotor traders
- North West Wales Electrical LtdElectricians
- R J Jones Plumbing & Heating LtdPlumbers and heating engineers
- TK Resin Driveways LtdSpecialist contractors
- White Diamond Windows LtdGlaziers
What happens if Elis Llywelyn Williams 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 November 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Dec 2026 to 31 Dec 2026 | £150 |
| 1 to 3 months late | 1 Jan 2027 to 28 Feb 2027 | £375 |
| 3 to 6 months late | 1 Mar 2027 to 31 May 2027 | £750 |
| More than 6 months late | From 1 Jun 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Mar 2027 | £200 |
| 3 months late | 28 May 2027 | another £200 |
| 6 months late | 28 Aug 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 28 Feb 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
- 13920448
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 16 February 2022 (4 years ago)
- Registered office
- ST. Davids Building, Lombard Street, Porthmadog, LL49 9AP
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 28 February (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 28 February 2025
- Last confirmation statement
- 15 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 Porthmadog
Other active plumbing and heating companies registered in Porthmadog.
- Meddyg Care (Facilities Management) Ltd2022
- R Humphreys & Sons Ltd2008
- R J Jones Plumbing & Heating Ltd2021
- Carwyn Ap Plymio A Gwresogi Cyf2025
- DB & E Williams Limited2015
All plumbing and heating companies in Porthmadog · All trades in Porthmadog · Plumbers and heating engineers across the UK
Frequently asked questions
When are Elis Llywelyn Williams Cyf's accounts due?
Elis Llywelyn Williams Cyf's next accounts are due at Companies House by 30 November 2026 (in 48 days), covering the period to 28 February 2026.
When is Elis Llywelyn Williams Cyf's CT600 due?
The CT600 for the period to 28 February 2026 is due at HMRC by 28 February 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 December 2026.
Is Elis Llywelyn Williams Cyf still trading?
Elis Llywelyn Williams 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 Elis Llywelyn Williams Cyf do?
Elis Llywelyn Williams Cyf is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is Elis Llywelyn Williams Cyf?
Elis Llywelyn Williams Cyf was incorporated on 16 February 2022, 4 years ago.
What is the penalty if Elis Llywelyn Williams 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 Elis Llywelyn Williams 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.