- Companies
- Plumbers and heating engineers
- Dumbarton
- DMC Gas Limited
DMC Gas Limited
- Company number
- SC682224
- Incorporated
- 27 Nov 20205 years trading
- Registered office
- 10 Glenpath, Dumbarton, G82 2QL
- Nature of business
- Plumbing, heat and air-conditioning installation
DMC Gas Limited is a 5-year-old private limited company registered in Dumbarton, company number SC682224, one of 10 plumbing and heating companies in Dumbarton. Its next accounts are due at Companies House on 31 August 2027, and the CT600 for the period to 30 November 2026 is due at HMRC on 30 November 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 £5,443 (-46.4%) on the year before, to £6,295.
- Net assets rose in 1 of 4 year-on-year comparisons on record.
- Current assets of £19K against £15K owed within a year: 1.2 times cover.
- 1 employee on average during the year.
- Balance sheets on record for 5 years, 2021 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 30 Nov 2025 | £6,295 | £19K | £15K | 1 | |
| 30 Nov 2024 | £12K | £23K | £13K | 1 | |
| 30 Nov 2023 | £16K | £15K | £12K | 1 | |
| 30 Nov 2022 | £41K | £25K | £19K | 1 | |
| 30 Nov 2021 | £23K | £32K | £14K | 1 |
Where DMC Gas Limited is registered
The registered office is in Dumbarton (G82), in the West Dunbartonshire local authority area, Scotland. Show G82 2QL on a map.
Other trade companies in G82
- Mintedcs LtdRoofers
- RT Electrical Services Scotland LtdElectricians
- Central Heating Scotland LtdPlumbers and heating engineers
- Carberry R.H LtdMachinery repair and installation
- RGM Window Cleaning LimitedCleaning companies
- Maxwell's Air Conditioning LtdPlumbers and heating engineers
- Plasterforce LtdPlasterers
- NCL Engineering LtdCivil engineering
Also registered at this address
1 other company uses the same registered office as DMC Gas Limited.
- Central Heating Scotland LtdPlumbers and heating engineers
What happens if DMC Gas 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 31 August 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Sep 2027 to 30 Sep 2027 | £150 |
| 1 to 3 months late | 1 Oct 2027 to 30 Nov 2027 | £375 |
| 3 to 6 months late | 1 Dec 2027 to 29 Feb 2028 | £750 |
| More than 6 months late | From 1 Mar 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Dec 2027 | £200 |
| 3 months late | 29 Feb 2028 | another £200 |
| 6 months late | 30 May 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Nov 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
- SC682224
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 27 November 2020 (5 years ago)
- Registered office
- 10 Glenpath, Dumbarton, G82 2QL
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 30 November (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 30 November 2025
- Last confirmation statement
- 26 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 Dumbarton
Other active plumbing and heating companies registered in Dumbarton.
- Gas Clouds Ltd2022
- James Scullion Plumbing & Heating Ltd2013
- K C Plumbers Limited2007
- K.Liddell Plumbing & Heating Ltd2022
- Kaney Renovations Ltd2020
- Maxwell's Air Conditioning Ltd2026
- Osprey Heating and Plumbing Ltd2020
- PHG Solutions Limited2018
All plumbing and heating companies in Dumbarton · All trades in Dumbarton · Plumbers and heating engineers across the UK
Frequently asked questions
When are DMC Gas Limited's accounts due?
DMC Gas Limited's next accounts are due at Companies House by 31 August 2027 (in 323 days), covering the period to 30 November 2026.
When is DMC Gas Limited's CT600 due?
The CT600 for the period to 30 November 2026 is due at HMRC by 30 November 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 September 2027.
Is DMC Gas Limited still trading?
DMC Gas 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 DMC Gas Limited do?
DMC Gas Limited is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is DMC Gas Limited?
DMC Gas Limited was incorporated on 27 November 2020, 5 years ago.
What is the penalty if DMC Gas 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 DMC Gas 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.