- Companies
- Plumbers and heating engineers
- Penarth
- Celtic Plumbing and Heating Ltd
Celtic Plumbing and Heating Ltd
- Company number
- 04607016
- Incorporated
- 3 Dec 200223 years trading
- Registered office
- 24 Plas Pamir, Penarth, South Glamorgan, CF64 1BT
- Nature of business
- Plumbing, heat and air-conditioning installation
Celtic Plumbing and Heating Ltd is a 23-year-old private limited company registered in Penarth, company number 04607016, one of 6 plumbing and heating companies in Penarth. Its next accounts are due at Companies House on 27 September 2027, and the CT600 for the period to 27 December 2026 is due at HMRC on 27 December 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 £25K (+120.3%) on the year before, to £45K.
- Net assets rose in 6 of 9 year-on-year comparisons on record.
- Current assets of £61K against £19K owed within a year: 3.2 times cover.
- 2 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 |
|---|---|---|---|---|---|
| 27 Dec 2025 | £45K | £61K | £19K | 2 | |
| 27 Dec 2024 | £20K | £38K | £21K | 2 | |
| 27 Dec 2023 | £11K | £17K | £16K | 2 | |
| 27 Dec 2022 | £22K | £32K | £25K | 3 | |
| 27 Dec 2021 | £26K | £37K | £31K | 3 | |
| 27 Dec 2020 | £28K | £54K | £51K | 3 | |
| 27 Dec 2019 | £2,298 | £43K | £54K | 3 | |
| 27 Dec 2018 | £1,825 | £49K | £45K | ||
| 28 Dec 2017 | £545 | £45K | £43K | ||
| 29 Dec 2016 | £381 | £54K | £52K |
Where Celtic Plumbing and Heating Ltd is registered
The registered office is in Penarth (CF64), in the Vale of Glamorgan local authority area, Wales. Show CF64 1BT on a map.
Other trade companies in CF64
- L Hillman Scaffolding LtdScaffolders
- Layward Projects LtdBuilders
- Vidi Aquam LtdPlumbers and heating engineers
- Ardena Property Developments LtdProperty developers
- Jet2Go Clean LtdCleaning companies
- JP Square LtdProperty developers
- Wells & Co Developments LtdInstallers
- A Grigoriou Plumbing & Heating LtdPlumbers and heating engineers
Also registered at this address
1 other company uses the same registered office as Celtic Plumbing and Heating Ltd.
- Synergy Scaffold UK LtdScaffolders
What happens if Celtic Plumbing and Heating Ltd 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 27 September 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 28 Sep 2027 to 27 Oct 2027 | £150 |
| 1 to 3 months late | 28 Oct 2027 to 27 Dec 2027 | £375 |
| 3 to 6 months late | 28 Dec 2027 to 27 Mar 2028 | £750 |
| More than 6 months late | From 28 Mar 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 28 Dec 2027 | £200 |
| 3 months late | 27 Mar 2028 | another £200 |
| 6 months late | 27 Jun 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 27 Dec 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
- 04607016
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 3 December 2002 (23 years ago)
- Registered office
- 24 Plas Pamir, Penarth, South Glamorgan, CF64 1BT
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 27 December (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 27 December 2025
- Last confirmation statement
- 3 December 2025
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 Penarth
Other active plumbing and heating companies registered in Penarth.
- Gentile Plumbing and Heating Limited2024
- Sturdy Plumbing Company Limited1968
- Timeless Bathrooms Ltd2025
- A Grigoriou Plumbing & Heating Ltd2026
- Air Conditioning Cardiff Ltd2026
All plumbing and heating companies in Penarth · All trades in Penarth · Plumbers and heating engineers across the UK
Frequently asked questions
When are Celtic Plumbing and Heating Ltd's accounts due?
Celtic Plumbing and Heating Ltd's next accounts are due at Companies House by 27 September 2027 (in 349 days), covering the period to 27 December 2026.
When is Celtic Plumbing and Heating Ltd's CT600 due?
The CT600 for the period to 27 December 2026 is due at HMRC by 27 December 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 28 September 2027.
Is Celtic Plumbing and Heating Ltd still trading?
Celtic Plumbing and Heating Ltd 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 Celtic Plumbing and Heating Ltd do?
Celtic Plumbing and Heating Ltd is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is Celtic Plumbing and Heating Ltd?
Celtic Plumbing and Heating Ltd was incorporated on 3 December 2002, 23 years ago.
What is the penalty if Celtic Plumbing and Heating Ltd 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 Celtic Plumbing and Heating Ltd 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.