- Companies
- Plumbers and heating engineers
- Doncaster
- Gas MK One Ltd
Gas MK One Ltd
- Company number
- 13304410
- Incorporated
- 30 Mar 20215 years trading
- Registered office
- 14 Fairlands Grove, Auckley, Doncaster, DN9 3FQ
- Nature of business
- Plumbing, heat and air-conditioning installation
Gas MK One Ltd is a 5-year-old private limited company registered in Doncaster, company number 13304410, one of 150 plumbing and heating companies in Doncaster. 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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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 down £1,844 (-27%) on the year before, to £4,983.
- Net assets rose in 1 of 3 year-on-year comparisons on record.
- Current assets of £9,127 against £21K owed within a year: 0.4 times cover.
- 1 employee on average during the year.
- Balance sheets on record for 4 years, 2022 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Mar 2025 | £4,983 | £9,127 | £21K | 1 | |
| 31 Mar 2024 | £6,827 | £8,859 | £24K | 1 | |
| 31 Mar 2023 | £5,379 | £29K | £34K | 1 | |
| 31 Mar 2022 | £13K | £33K | £35K | 1 |
Where Gas MK One Ltd is registered
The registered office is in Doncaster (DN9), in the Doncaster local authority area, Yorkshire and The Humber. Show DN9 3FQ on a map.
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What happens if Gas MK One 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
- 13304410
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 30 March 2021 (5 years ago)
- Registered office
- 14 Fairlands Grove, Auckley, Doncaster, DN9 3FQ
- 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
- 14 November 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 Doncaster
Other active plumbing and heating companies registered in Doncaster.
- Gasper Property Solutions Ltd2026
- GD@DIY Ltd2019
- Ges Mechanical & Electrical Limited2015
- GFS Doncaster Limited2025
- Goodwin Gas Ltd2024
- Green Heat Pump Solutions Limited2023
- H20 Solar (Engineering) Limited2008
- Hayfield Heating Limited2019
All plumbing and heating companies in Doncaster · All trades in Doncaster · Plumbers and heating engineers across the UK
Frequently asked questions
When are Gas MK One Ltd's accounts due?
Gas MK One 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 Gas MK One 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 Gas MK One Ltd still trading?
Gas MK One 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 Gas MK One Ltd do?
Gas MK One Ltd is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is Gas MK One Ltd?
Gas MK One Ltd was incorporated on 30 March 2021, 5 years ago.
What is the penalty if Gas MK One 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 Gas MK One 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.