- Companies
- Plumbers and heating engineers
- Yeovil
- Gasmart Southwest Limited
Gasmart Southwest Limited
- Company number
- 11561618
- Incorporated
- 10 Sep 20188 years trading
- Registered office
- 1 Church Terrace, Yeovil, Somerset, BA20 1HX
- Nature of business
- Plumbing, heat and air-conditioning installation
Gasmart Southwest Limited is a 8-year-old private limited company registered in Yeovil, company number 11561618, one of 35 plumbing and heating companies in Yeovil. Its next accounts are due at Companies House on 30 November 2026, and the CT600 for the period to 28 February 2026 is due at HMRC on 28 February 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 (+193.9%) on the year before, to £4,882.
- Net assets rose in 4 of 6 year-on-year comparisons on record.
- Current assets of £13K against £17K owed within a year: 0.8 times cover.
- 2 employees on average during the year.
- Balance sheets on record for 7 years, 2019 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 28 Feb 2025 | £4,882 | £13K | £17K | 2 | |
| 29 Feb 2024 | -£5,200 | £12K | £15K | 2 | |
| 28 Feb 2023 | £8,965 | £26K | £16K | 2 | |
| 28 Feb 2022 | £8,533 | £21K | £12K | 2 | |
| 28 Feb 2021 | £22K | £22K | £6,640 | 2 | |
| 29 Feb 2020 | £7,466 | £8,387 | £3,711 | 2 | |
| 28 Feb 2019 | £100 |
Where Gasmart Southwest Limited is registered
The registered office is in Yeovil (BA20), in the Somerset local authority area, South West. Show BA20 1HX on a map.
Other trade companies in BA20
- Blue Carwash LtdMechanics and garages
- Dalziel Construction Group LtdProperty developers
- Bamfords Construction LimitedBuilders
- Bamfords Me LimitedElectricians
- Skyview Construction LtdProperty developers
- Ampx Group LtdMotor traders
- Jenks & Co Carpentry and Building Services LimitedProperty developers
- Akm LimitedPlumbers and heating engineers
Also registered at this address
14 other companies use the same registered office as Gasmart Southwest Limited.
- Airwaves Communications (South West) LimitedMachinery repair and installation
- Davenport Western LimitedMachinery repair and installation
- Fixerup UK LtdMachinery repair and installation
- Freedom Phones LtdMachinery repair and installation
- Harlequin Scaffolding SW LimitedScaffolders
- James Gisborne LimitedFinishing trades
- Kitchen Kind LimitedSpecialist contractors
- McGill’S Construction LimitedBuilders
- Powersafe Electrical SW LimitedElectricians
- Robert Cockings Motor Repairs LimitedMechanics and garages
- Somerset Plant and Groundworks LimitedMotor traders
- SW Autotech LtdMechanics and garages
- T 2 Digital LimitedElectricians
- Wainscot Interiors LimitedJoiners and carpenters
What happens if Gasmart Southwest 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 November 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Dec 2026 to 31 Dec 2026 | £150 |
| 1 to 3 months late | 1 Jan 2027 to 28 Feb 2027 | £375 |
| 3 to 6 months late | 1 Mar 2027 to 31 May 2027 | £750 |
| More than 6 months late | From 1 Jun 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Mar 2027 | £200 |
| 3 months late | 28 May 2027 | another £200 |
| 6 months late | 28 Aug 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 28 Feb 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
- 11561618
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 10 September 2018 (8 years ago)
- Registered office
- 1 Church Terrace, Yeovil, Somerset, BA20 1HX
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 28 February (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 28 February 2025
- Last confirmation statement
- 9 September 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 Yeovil
Other active plumbing and heating companies registered in Yeovil.
- H&A Heating and Plumbing Limited2024
- Heat-Tech South West Limited2003
- Heatfluence Limited2022
- Hilbre Plumbing Ltd2024
- Holm Heating & Plumbing Limited2005
- John Beattie Plumbing and Heating Engineers Limited1990
- Launston Group Limited2020
- Michael Pitman Limited2010
All plumbing and heating companies in Yeovil · All trades in Yeovil · Plumbers and heating engineers across the UK
Frequently asked questions
When are Gasmart Southwest Limited's accounts due?
Gasmart Southwest Limited's next accounts are due at Companies House by 30 November 2026 (in 48 days), covering the period to 28 February 2026.
When is Gasmart Southwest Limited's CT600 due?
The CT600 for the period to 28 February 2026 is due at HMRC by 28 February 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 December 2026.
Is Gasmart Southwest Limited still trading?
Gasmart Southwest 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 Gasmart Southwest Limited do?
Gasmart Southwest Limited is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is Gasmart Southwest Limited?
Gasmart Southwest Limited was incorporated on 10 September 2018, 8 years ago.
What is the penalty if Gasmart Southwest 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 Gasmart Southwest 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.