- Companies
- Plumbers and heating engineers
- Gasmaster Dorset Ltd
Gasmaster Dorset Ltd
- Company number
- 15610714
- Incorporated
- 2 Apr 20242 years trading
- Registered office
- 5 Woodlands Avenue, Hamworthy, BH15 4EE
- Nature of business
- Plumbing, heat and air-conditioning installation
Gasmaster Dorset Ltd is a 2-year-old private limited company registered in Hamworthy, company number 15610714, one of the UK's plumbing and heating companies. Its next accounts are due at Companies House on 31 December 2026, and the CT600 for the period to 31 March 2026 is due at HMRC on 31 March 2027.
Key dates
Worked out from the year end and filing history on the Companies House register.
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Financial snapshot, 2025
From the balance sheet at 31 March 2025, as filed at Companies House.
Where Gasmaster Dorset Ltd is registered
The registered office is in Hamworthy (BH15), in the Bournemouth, Christchurch and Poole local authority area, South West. Show BH15 4EE on a map.
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What happens if Gasmaster Dorset 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 31 December 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jan 2027 to 31 Jan 2027 | £150 |
| 1 to 3 months late | 1 Feb 2027 to 31 Mar 2027 | £375 |
| 3 to 6 months late | 1 Apr 2027 to 30 Jun 2027 | £750 |
| More than 6 months late | From 1 Jul 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Apr 2027 | £200 |
| 3 months late | 30 Jun 2027 | another £200 |
| 6 months late | 30 Sep 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Mar 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
- 15610714
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 2 April 2024 (2 years ago)
- Registered office
- 5 Woodlands Avenue, Hamworthy, BH15 4EE
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 31 March (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 March 2025
- Last confirmation statement
- 1 April 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
Other active plumbing and heating companies.
Frequently asked questions
When are Gasmaster Dorset Ltd's accounts due?
Gasmaster Dorset Ltd's next accounts are due at Companies House by 31 December 2026 (in 79 days), covering the period to 31 March 2026.
When is Gasmaster Dorset Ltd's CT600 due?
The CT600 for the period to 31 March 2026 is due at HMRC by 31 March 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 January 2027.
Is Gasmaster Dorset Ltd still trading?
Gasmaster Dorset 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 Gasmaster Dorset Ltd do?
Gasmaster Dorset Ltd is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is Gasmaster Dorset Ltd?
Gasmaster Dorset Ltd was incorporated on 2 April 2024, 2 years ago.
What is the penalty if Gasmaster Dorset 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 Gasmaster Dorset 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.