Gasfirm Ltd
- Company number
- 16481606
- Incorporated
- 29 May 20251 year trading
- Registered office
- 28 Dores Road, Swindon, SN2 7QT
- Nature of business
- Plumbing, heat and air-conditioning installation
Gasfirm Ltd is a 1-year-old private limited company registered in Swindon, company number 16481606, one of 164 plumbing and heating companies in Swindon. Its next accounts are due at Companies House on 28 February 2027, and its first CT600 is due at HMRC on 28 May 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 Gasfirm Ltd is registered
The registered office is in Swindon (SN2), in the Swindon local authority area, South West. Show SN2 7QT on a map.
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- Sturgess Construction LimitedBuilders
- Eatwell Telecom LtdCivil engineering
- Premium Bodyshop LtdMechanics and garages
- Stratton Windows Swindon LtdJoiners and carpenters
- Plumbtj LimitedPlumbers and heating engineers
- Apex Vehicle Body Repairs LimitedMechanics and garages
What happens if Gasfirm 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 28 February 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Mar 2027 to 31 Mar 2027 | £150 |
| 1 to 3 months late | 1 Apr 2027 to 31 May 2027 | £375 |
| 3 to 6 months late | 1 Jun 2027 to 31 Aug 2027 | £750 |
| More than 6 months late | From 1 Sep 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jun 2027 | £200 |
| 3 months late | 31 Aug 2027 | another £200 |
| 6 months late | 30 Nov 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 May 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
- 16481606
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 29 May 2025 (1 year ago)
- Registered office
- 28 Dores Road, Swindon, SN2 7QT
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 31 May (accounting reference date)
- Accounts type
- No accounts filed yet
- Last confirmation statement
- 28 May 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 Swindon
Other active plumbing and heating companies registered in Swindon.
- Gastech Wilts Ltd2013
- Greene Plumbing & Heating Specialists Limited2025
- Habitat Solutions (Swindon) Limited2014
- HD Plumbing & Heating Solutions Ltd2015
- Heatrite (Swindon) Ltd2009
- Heatto Ltd2024
- Heatwise (South West) Limited2007
- Hendrick Heating and Plumbing Limited2013
All plumbing and heating companies in Swindon · All trades in Swindon · Plumbers and heating engineers across the UK
Frequently asked questions
When are Gasfirm Ltd's accounts due?
Gasfirm Ltd's next accounts are due at Companies House by 28 February 2027 (in 138 days), covering the period to 31 May 2026.
When is Gasfirm 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 28 May 2026, due by 28 May 2027, and one for the period to 31 May 2026, due by 31 May 2027. Corporation tax is payable 9 months and 1 day after the end of each.
Is Gasfirm Ltd still trading?
Gasfirm 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 Gasfirm Ltd do?
Gasfirm Ltd is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is Gasfirm Ltd?
Gasfirm Ltd was incorporated on 29 May 2025, 1 year ago.
What is the penalty if Gasfirm 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 Gasfirm 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.