- Companies
- Plumbers and heating engineers
- Darlington
- Gasomatic Ltd
Gasomatic Ltd
- Company number
- 11359673
- Incorporated
- 14 May 20188 years trading
- Registered office
- 45 Clare Avenue, Darlington, DL3 8SJ
- Nature of business
- Plumbing, heat and air-conditioning installation
Gasomatic Ltd is a 8-year-old private limited company registered in Darlington, company number 11359673, one of 58 plumbing and heating companies in Darlington. Its next accounts are due at Companies House on 28 February 2027, and the CT600 for the period to 30 May 2026 is due at HMRC on 30 May 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 up £1,294 (+17.3%) on the year before, to -£6,196.
- Net assets rose in 2 of 6 year-on-year comparisons on record.
- Current assets of £6,014 against £12K owed within a year: 0.5 times cover.
- 2 employees on average during the year.
- Balance sheets on record for 7 years, 2019 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 May 2025 | -£6,196 | £6,014 | £12K | 2 | |
| 31 May 2024 | -£7,490 | £1,861 | £9,351 | 2 | |
| 31 May 2023 | -£14K | £1,572 | £15K | 2 | |
| 31 May 2022 | -£14K | £1,974 | £16K | 1 | |
| 31 May 2021 | -£12K | £1,187 | £14K | 2 | |
| 31 May 2020 | -£4,585 | £3,374 | £10K | 1 | |
| 31 May 2019 | £545 | £11K | £13K |
Where Gasomatic Ltd is registered
The registered office is in Darlington (DL3), in the Darlington local authority area, North East. Show DL3 8SJ on a map.
Other trade companies in DL3
- Shine With Helen LtdCleaning companies
- RJB Consultants LtdInstallers
- Garry's Car Valeting LtdCleaning companies
- Go Elite Cleaning Services LtdCleaning companies
- BGP Property LtdProperty developers
- Frontier Energy Services LtdPlumbers and heating engineers
- Andrew Morgan Joinery LtdJoiners and carpenters
- Aburns Engineering LtdBuilders
What happens if Gasomatic 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 | 31 May 2027 | £200 |
| 3 months late | 30 Aug 2027 | another £200 |
| 6 months late | 30 Nov 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 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
- 11359673
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 14 May 2018 (8 years ago)
- Registered office
- 45 Clare Avenue, Darlington, DL3 8SJ
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 30 May (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 May 2025
- Last confirmation statement
- 8 October 2025
- Previous names
- G D Plumbing and Gas Services Ltd (until 16 Mar 2022)
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 Darlington
Other active plumbing and heating companies registered in Darlington.
- Gavin Watson Plumbing & Heating Ltd2017
- Haddenair Ltd2023
- Harrowgate Hill Heating & Property Maintenance Ltd2015
- HBN Heated by Nature Limited2010
- Hemmings Plumbing & Heating Ltd2025
- Hewitson Property Services Ltd2023
- Hydrowarm Ltd2020
- I R Waller Heating & Plumbing Limited2016
All plumbing and heating companies in Darlington · All trades in Darlington · Plumbers and heating engineers across the UK
Frequently asked questions
When are Gasomatic Ltd's accounts due?
Gasomatic Ltd's next accounts are due at Companies House by 28 February 2027 (in 139 days), covering the period to 30 May 2026.
When is Gasomatic Ltd's CT600 due?
The CT600 for the period to 30 May 2026 is due at HMRC by 30 May 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 March 2027.
Is Gasomatic Ltd still trading?
Gasomatic 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 Gasomatic Ltd do?
Gasomatic Ltd is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is Gasomatic Ltd?
Gasomatic Ltd was incorporated on 14 May 2018, 8 years ago.
What is the penalty if Gasomatic 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 Gasomatic 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.