- Companies
- Plumbers and heating engineers
- Swansea
- South Wales Gas and Boiler Services Ltd
South Wales Gas and Boiler Services Ltd
- Company number
- 17021531
- Incorporated
- 9 Feb 2026
- Registered office
- 8 Heol Dyfed, Gorseinon, Swansea, SA4 4GF
- Nature of business
- Plumbing, heat and air-conditioning installation
South Wales Gas and Boiler Services Ltd is a newly incorporated private limited company registered in Swansea, company number 17021531, one of 148 plumbing and heating companies in Swansea. Its next accounts are due at Companies House on 9 November 2027, and its first CT600 is due at HMRC on 8 February 2028.
Key dates
This company has not filed accounts yet. First accounts are due 21 months after incorporation, and the first period can run longer than a year.
Is this your company?
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Where South Wales Gas and Boiler Services Ltd is registered
The registered office is in Swansea (SA4), in the Swansea local authority area, Wales. Show SA4 4GF on a map.
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What happens if South Wales Gas and Boiler Services 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 9 November 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 10 Nov 2027 to 9 Dec 2027 | £150 |
| 1 to 3 months late | 10 Dec 2027 to 9 Feb 2028 | £375 |
| 3 to 6 months late | 10 Feb 2028 to 9 May 2028 | £750 |
| More than 6 months late | From 10 May 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 29 Feb 2028 | £200 |
| 3 months late | 28 May 2028 | another £200 |
| 6 months late | 28 Aug 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 28 Feb 2029 | 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
- 17021531
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 9 February 2026
- Registered office
- 8 Heol Dyfed, Gorseinon, Swansea, SA4 4GF
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 28 February (accounting reference date)
- Accounts type
- No accounts filed yet
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 Swansea
Other active plumbing and heating companies registered in Swansea.
- South Wales Gas Services Ltd2018
- South Wales Heat Pumps Limited2023
- Specialist Sprinkler and Plumbing Services Limited2019
- SR Williams Plumbing and Heating Ltd2025
- Star Gas Services Wales Limited2023
- Stewart Thomas Plumbing & Heating Ltd2022
- Swansbay Ltd2022
- Swansea Gas and Oil Limited2025
All plumbing and heating companies in Swansea · All trades in Swansea · Plumbers and heating engineers across the UK
Frequently asked questions
When are South Wales Gas and Boiler Services Ltd's accounts due?
South Wales Gas and Boiler Services Ltd's next accounts are due at Companies House by 9 November 2027 (in 391 days), covering the period to 28 February 2027.
When is South Wales Gas and Boiler Services Ltd's CT600 due?
The first accounts cover more than 12 months, so there are two Company Tax Returns: one for the 12 months to 8 February 2027, due by 8 February 2028, and one for the period to 28 February 2027, due by 28 February 2028. Corporation tax is payable 9 months and 1 day after the end of each.
Is South Wales Gas and Boiler Services Ltd still trading?
South Wales Gas and Boiler Services 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 South Wales Gas and Boiler Services Ltd do?
South Wales Gas and Boiler Services Ltd is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is South Wales Gas and Boiler Services Ltd?
South Wales Gas and Boiler Services Ltd was incorporated on 9 February 2026, less than a year ago.
What is the penalty if South Wales Gas and Boiler Services 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 South Wales Gas and Boiler Services 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.