- Companies
- Plumbers and heating engineers
- London
- Cos Gas Plumbing & Heating Limited
Cos Gas Plumbing & Heating Limited
- Company number
- 09572653
- Incorporated
- 5 May 201511 years trading
- Registered office
- 129 Colney Hatch Lane, London, N10 1HD
- Nature of business
- Plumbing, heat and air-conditioning installation
Cos Gas Plumbing & Heating Limited is a 11-year-old private limited company registered in London, company number 09572653, one of 2,972 plumbing and heating companies in London. Its next accounts are due at Companies House on 28 February 2027, and the CT600 for the period to 31 May 2026 is due at HMRC on 31 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 £1,671 (+6.7%) on the year before, to -£23K.
- Net assets rose in 6 of 9 year-on-year comparisons on record.
- Current assets of £68K against £61K owed within a year: 1.1 times cover.
- 1 employee on average during the year.
- Balance sheets on record for 10 years, 2016 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 May 2025 | -£23K | £68K | £61K | 1 | |
| 31 May 2024 | -£25K | £51K | £47K | 1 | |
| 31 May 2023 | £2,905 | £29K | £23K | 1 | |
| 31 May 2022 | £663 | £29K | £9,831 | 1 | |
| 31 May 2021 | £577 | £11K | £6,012 | 1 | |
| 31 May 2020 | £227 | £4,941 | £326 | 0 | |
| 31 May 2019 | £109 | £5,283 | £4,781 | 0 | |
| 31 May 2018 | £449 | £4,335 | £3,673 | 0 | |
| 31 May 2017 | £200 | £8,841 | £8,262 | ||
| 31 May 2016 | £535 | £672 | £5,662 | £5,839 |
Where Cos Gas Plumbing & Heating Limited is registered
The registered office is in London (N10), in the Barnet local authority area, London. Show N10 1HD on a map.
Other trade companies in N10
- Endo Climates LimitedPlumbers and heating engineers
- Bjpwaterworks LtdProperty developers
- Oxman LimitedProperty developers
- Union Traffic Management LtdLandscapers and gardeners
- National Engine Solutions LimitedMotor traders
- A&D Building Solutions LtdProperty developers
- Primeropesolutions LtdSpecialist contractors
- The Aircon Market LtdPlumbers and heating engineers
Also registered at this address
9 other companies use the same registered office as Cos Gas Plumbing & Heating Limited.
- Alanandjo LtdBuilders
- Dewolf Design and Build LtdProperty developers
- G.A.G LimitedLandscapers and gardeners
- Hastings & Jones LtdProperty developers
- Modern Joinery and Construction LtdProperty developers
- Monte Design LtdProperty developers
- Narta LtdProperty developers
- S I Mechanical-Installation LtdPlumbers and heating engineers
- The Greek Gardener LtdLandscapers and gardeners
What happens if Cos Gas Plumbing & 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 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 | 1 Jun 2027 | £200 |
| 3 months late | 31 Aug 2027 | another £200 |
| 6 months late | 30 Nov 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 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
- 09572653
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 5 May 2015 (11 years ago)
- Registered office
- 129 Colney Hatch Lane, London, N10 1HD
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 31 May (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 May 2025
- Last confirmation statement
- 5 May 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 in London
Other active plumbing and heating companies registered in London.
- Cosier Heat Ltd2025
- Cosn Service Limited2025
- Cosy Flow Limited2025
- Cosy Homes Heating Ltd2024
- Cousins and Family Limited2025
- Cowan Heating and Gas Engineers Ltd2020
- Coyfield Ltd2024
- CP Gas and Heating Limited2024
All plumbing and heating companies in London · All trades in London · Plumbers and heating engineers across the UK
Frequently asked questions
When are Cos Gas Plumbing & Heating Limited's accounts due?
Cos Gas Plumbing & Heating Limited's next accounts are due at Companies House by 28 February 2027 (in 138 days), covering the period to 31 May 2026.
When is Cos Gas Plumbing & Heating Limited's CT600 due?
The CT600 for the period to 31 May 2026 is due at HMRC by 31 May 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 March 2027.
Is Cos Gas Plumbing & Heating Limited still trading?
Cos Gas Plumbing & 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 Cos Gas Plumbing & Heating Limited do?
Cos Gas Plumbing & Heating Limited is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is Cos Gas Plumbing & Heating Limited?
Cos Gas Plumbing & Heating Limited was incorporated on 5 May 2015, 11 years ago.
What is the penalty if Cos Gas Plumbing & 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 Cos Gas Plumbing & 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.