- Companies
- Plumbers and heating engineers
- Seaham
- City Gas Plumbing and Heating Limited
City Gas Plumbing and Heating Limited
- Company number
- 12330794
- Incorporated
- 25 Nov 20196 years trading
- Registered office
- 46 Church Lane, Murton, Seaham, County Durham, SR7 9RL
- Nature of business
- Plumbing, heat and air-conditioning installation
City Gas Plumbing and Heating Limited is a 6-year-old private limited company registered in Seaham, company number 12330794, one of 11 plumbing and heating companies in Seaham. 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 up £6,108 (+56.8%) on the year before, to £17K.
- Net assets rose in 4 of 5 year-on-year comparisons on record.
- Current assets of £36K against £39K owed within a year: 0.9 times cover.
- 2 employees on average, down from 3 the year before.
- Balance sheets on record for 6 years, 2020 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 30 Nov 2025 | £17K | £36K | £39K | 2 | |
| 30 Nov 2024 | £11K | £9,623 | £31K | £37K | 3 |
| 30 Nov 2023 | £21K | £16K | £32K | £16K | 2 |
| 30 Nov 2022 | £16K | £7,353 | £37K | £12K | 2 |
| 30 Nov 2021 | £11K | £22K | £36K | £12K | 2 |
| 30 Nov 2020 | £1,156 | £10K | £25K | £6,642 | 2 |
Where City Gas Plumbing and Heating Limited is registered
The registered office is in Seaham (SR7), in the County Durham local authority area, North East. Show SR7 9RL on a map.
Other trade companies in SR7
- Northeast Hygiene Solution LtdCleaning companies
- Wraccess LimitedElectricians
- GS Groundworks Ne LtdCivil engineering
- Alloy Wheel Studio LimitedMechanics and garages
- Leewoods Developments LtdProperty developers
- Parker Clarke Group LtdMachinery repair and installation
- Coast 2 Coast Builders LtdBuilders
- Technalight LtdElectricians
Also registered at this address
1 other company uses the same registered office as City Gas Plumbing and Heating Limited.
- Gas Boiler Installations North East LimitedPlumbers and heating engineers
What happens if City Gas Plumbing and Heating 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
- 12330794
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 25 November 2019 (6 years ago)
- Registered office
- 46 Church Lane, Murton, Seaham, County Durham, SR7 9RL
- 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
- 24 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 Seaham
Other active plumbing and heating companies registered in Seaham.
- DW Plumbing & Heating (Ne) Ltd2024
- Fixt Group Ltd2023
- Gas Boiler Installations North East Limited2020
- Gsi:Ne Ltd2009
- Housewarmers Contracts Limited2014
- MD Improvements Limited2022
- P P Heating Ltd2024
- A & G Plumbing (Tyne & Wear) Limited2001
All plumbing and heating companies in Seaham · All trades in Seaham · Plumbers and heating engineers across the UK
Frequently asked questions
When are City Gas Plumbing and Heating Limited's accounts due?
City Gas Plumbing and Heating Limited's next accounts are due at Companies House by 31 August 2027 (in 322 days), covering the period to 30 November 2026.
When is City Gas Plumbing and Heating 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 City Gas Plumbing and Heating Limited still trading?
City Gas Plumbing and Heating 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 City Gas Plumbing and Heating Limited do?
City Gas Plumbing and Heating Limited is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is City Gas Plumbing and Heating Limited?
City Gas Plumbing and Heating Limited was incorporated on 25 November 2019, 6 years ago.
What is the penalty if City Gas Plumbing and Heating 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 City Gas Plumbing and Heating 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.