- Companies
- Plumbers and heating engineers
- Portsmouth
- Square Gas Limited
Square Gas Limited
- Company number
- 15063308
- Incorporated
- 10 Aug 20233 years trading
- Registered office
- Office 4, 8-9 Rodney Road, Portsmouth, PO4 8BF
- Nature of business
- Plumbing, heat and air-conditioning installation
Square Gas Limited is a 3-year-old private limited company registered in Portsmouth, company number 15063308, one of 141 plumbing and heating companies in Portsmouth. Its next accounts are due at Companies House on 31 May 2027, and the CT600 for the period to 31 August 2026 is due at HMRC on 31 August 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 £10K (+42.1%) on the year before, to £34K.
- Current assets of £43K against £12K owed within a year: 3.5 times cover.
- 1 employee on average during the year.
- Balance sheets on record for 2 years, 2024 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Aug 2025 | £34K | £43K | £43K | £12K | 1 |
| 31 Aug 2024 | £24K | £28K | £9,355 | 1 |
Who runs and owns Square Gas Limited
From the Companies House register. Individuals are shown by initials only; the full register is on Companies House.
Officer
| Name | Role | Appointed |
|---|---|---|
| P*** C*** | Director | Aug 2023 |
Person with significant control
Where Square Gas Limited is registered
The registered office is in Portsmouth (PO4), in the Portsmouth local authority area, South East. Show PO4 8BF on a map.
Other trade companies in PO4
- Prestiige LtdMechanics and garages
- Portsea Homes LimitedProperty developers
- Elite Building Services (Portsmouth) LtdBuilders
- G Form Drylining LimitedPlasterers
- Solent Sales Haulage & Storage LtdMotor traders
- Koko Construction LtdBuilders
- Chase RCS LtdCivil engineering
- Proper Job Handyman LtdFinishing trades
Also registered at this address
10 other companies use the same registered office as Square Gas Limited.
- Bedborough Electrics LimitedElectricians
- C.M Interior Solutions LimitedInstallers
- Hi-Tech Cleaning Services South LimitedCleaning companies
- Home Preservation LimitedSpecialist contractors
- KGS Mechanical LimitedPlumbers and heating engineers
- Magic Motorhome Man LimitedMechanics and garages
- Oakley Groundworks LimitedProperty developers
- PB Installations LimitedGlaziers
- Radh Interiors LtdInstallers
- Revive Auto Innovations (Portsmouth) LimitedMechanics and garages
What happens if Square 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 May 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jun 2027 to 30 Jun 2027 | £150 |
| 1 to 3 months late | 1 Jul 2027 to 31 Aug 2027 | £375 |
| 3 to 6 months late | 1 Sep 2027 to 30 Nov 2027 | £750 |
| More than 6 months late | From 1 Dec 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Sep 2027 | £200 |
| 3 months late | 30 Nov 2027 | another £200 |
| 6 months late | 29 Feb 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Aug 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
- 15063308
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 10 August 2023 (3 years ago)
- Registered office
- Office 4, 8-9 Rodney Road, Portsmouth, PO4 8BF
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 31 August (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 August 2025
- Last confirmation statement
- 9 August 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 Portsmouth
Other active plumbing and heating companies registered in Portsmouth.
- SRS Property Maintenance Ltd2026
- Stellar Gas Services Ltd2019
- Sylvadale Limited2012
- Theo Enterprises Limited2021
- Thermaflow Heating & Plumbing Solutions Limited2021
- Thirty Something Collective Ltd2024
- Top Plumb Gas Division Ltd2025
- True Blue Gas Services Limited2007
All plumbing and heating companies in Portsmouth · All trades in Portsmouth · Plumbers and heating engineers across the UK
Frequently asked questions
When are Square Gas Limited's accounts due?
Square Gas Limited's next accounts are due at Companies House by 31 May 2027 (in 231 days), covering the period to 31 August 2026.
When is Square Gas Limited's CT600 due?
The CT600 for the period to 31 August 2026 is due at HMRC by 31 August 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 June 2027.
Is Square Gas Limited still trading?
Square 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 Square Gas Limited do?
Square Gas Limited is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is Square Gas Limited?
Square Gas Limited was incorporated on 10 August 2023, 3 years ago.
Who runs Square Gas Limited?
Square Gas Limited has 1 active director, the longest-serving appointed in Aug 2023. Their names and service addresses are on the Companies House register.
Who owns Square Gas Limited?
One person or company has significant control of Square Gas Limited: an individual (owns 75% or more of the shares).
What is the penalty if Square 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 Square 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.