- Companies
- Plumbers and heating engineers
- Swansea
- Swansea Gas and Oil Limited
Swansea Gas and Oil Limited
- Company number
- 16781032
- Incorporated
- 13 Oct 20251 year trading
- Registered office
- 6 Bryn Close, Swansea, West Glamorgan, SA4 4FN
- Nature of business
- Plumbing, heat and air-conditioning installation
Swansea Gas and Oil Limited is a 1-year-old private limited company registered in Swansea, company number 16781032, one of 148 plumbing and heating companies in Swansea. Its next accounts are due at Companies House on 13 July 2027, and its first CT600 is due at HMRC on 12 October 2027.
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 Swansea Gas and Oil Limited is registered
The registered office is in Swansea (SA4), in the Swansea local authority area, Wales. Show SA4 4FN on a map.
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What happens if Swansea Gas and Oil 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 13 July 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 14 Jul 2027 to 13 Aug 2027 | £150 |
| 1 to 3 months late | 14 Aug 2027 to 13 Oct 2027 | £375 |
| 3 to 6 months late | 14 Oct 2027 to 13 Jan 2028 | £750 |
| More than 6 months late | From 14 Jan 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Nov 2027 | £200 |
| 3 months late | 31 Jan 2028 | another £200 |
| 6 months late | 30 Apr 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Oct 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
- 16781032
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 13 October 2025 (1 year ago)
- Registered office
- 6 Bryn Close, Swansea, West Glamorgan, SA4 4FN
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 31 October (accounting reference date)
- Accounts type
- No accounts filed yet
- Previous names
- Swansea Gas & Oil Limited (until 16 Oct 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 Swansea
Other active plumbing and heating companies registered in Swansea.
- Swansea Gas Services Ltd2023
- Swansea Plumbers & Boilers Ltd2025
- T & G Gas Services Ltd2022
- TD Heating Solutions Ltd2026
- TGD Services Ltd2020
- TGHC Group Ltd2024
- The Plumbing and Gas Company Ltd2024
- Thomas & Green Plumbing & Heating Ltd2022
All plumbing and heating companies in Swansea · All trades in Swansea · Plumbers and heating engineers across the UK
Frequently asked questions
When are Swansea Gas and Oil Limited's accounts due?
Swansea Gas and Oil Limited's next accounts are due at Companies House by 13 July 2027 (in 272 days), covering the period to 31 October 2026.
When is Swansea Gas and Oil Limited's CT600 due?
The first accounts cover more than 12 months, so there are two Company Tax Returns: one for the 12 months to 12 October 2026, due by 12 October 2027, and one for the period to 31 October 2026, due by 31 October 2027. Corporation tax is payable 9 months and 1 day after the end of each.
Is Swansea Gas and Oil Limited still trading?
Swansea Gas and Oil 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 Swansea Gas and Oil Limited do?
Swansea Gas and Oil Limited is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is Swansea Gas and Oil Limited?
Swansea Gas and Oil Limited was incorporated on 13 October 2025, 1 year ago.
What is the penalty if Swansea Gas and Oil 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 Swansea Gas and Oil 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.