- Companies
- Plumbers and heating engineers
- Southsea
- Heat Co Gas Limited
Heat Co Gas Limited
- Company number
- 15839714
- Incorporated
- 15 Jul 20242 years trading
- Registered office
- 63 Castle Road, Southsea, PO5 3AY
- Nature of business
- Plumbing, heat and air-conditioning installation
Heat Co Gas Limited is a 2-year-old private limited company registered in Southsea, company number 15839714, one of 25 plumbing and heating companies in Southsea. Its next accounts are due at Companies House on 30 April 2027, and the CT600 for the period to 31 July 2026 is due at HMRC on 31 July 2027.
Key dates
Worked out from the year end and filing history on the Companies House register.
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Financial snapshot, 2025
From the balance sheet at 31 July 2025, as filed at Companies House.
Where Heat Co Gas Limited is registered
The registered office is in Southsea (PO5), in the Portsmouth local authority area, South East. Show PO5 3AY on a map.
Other trade companies in PO5
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- Luxury Resin Floors and Media Walls LtdBuilders
- Pretty Unique Cleaning Services LtdCleaning companies
- Bay Bricks LtdProperty developers
- Blydan Holdings LimitedProperty developers
- Inside Out Developments Southampton LtdBuilders
- Hampshire Car Hire LtdMechanics and garages
- Baynes Wipers LtdMachinery repair and installation
Shared registered office
26 companies on our pages use this registered office address. An address shared this widely is usually an accountant's office or a company formation agent's service address, not where the business trades from.
What happens if Heat Co 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 30 April 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 May 2027 to 31 May 2027 | £150 |
| 1 to 3 months late | 1 Jun 2027 to 31 Jul 2027 | £375 |
| 3 to 6 months late | 1 Aug 2027 to 31 Oct 2027 | £750 |
| More than 6 months late | From 1 Nov 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Aug 2027 | £200 |
| 3 months late | 31 Oct 2027 | another £200 |
| 6 months late | 31 Jan 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Jul 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
- 15839714
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 15 July 2024 (2 years ago)
- Registered office
- 63 Castle Road, Southsea, PO5 3AY
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 31 July (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 July 2025
- Last confirmation statement
- 14 July 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 Southsea
Other active plumbing and heating companies registered in Southsea.
- Heat Co Plumbing & Heating Limited2023
- Keeping Mechanical Services Ltd2021
- Newport Plumbing & Heating Limited2002
- P.M Gas Heating & Plumbing Limited2018
- PCS Airtech Ltd2025
- Pompey Plumb Ltd2019
- Premheat Limited2021
- R-Gas Heating Ltd2023
All plumbing and heating companies in Southsea · All trades in Southsea · Plumbers and heating engineers across the UK
Frequently asked questions
When are Heat Co Gas Limited's accounts due?
Heat Co Gas Limited's next accounts are due at Companies House by 30 April 2027 (in 199 days), covering the period to 31 July 2026.
When is Heat Co Gas Limited's CT600 due?
The CT600 for the period to 31 July 2026 is due at HMRC by 31 July 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 May 2027.
Is Heat Co Gas Limited still trading?
Heat Co 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 Heat Co Gas Limited do?
Heat Co Gas Limited is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is Heat Co Gas Limited?
Heat Co Gas Limited was incorporated on 15 July 2024, 2 years ago.
What is the penalty if Heat Co 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 Heat Co 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.