- Companies
- Plumbers and heating engineers
- Swansea
- Graham's Heating & Plumbing Ltd
Graham's Heating & Plumbing Ltd
- Company number
- 07390531
- Incorporated
- 28 Sep 201016 years trading
- Registered office
- Glan Yr Afon House 30 Walters Road, Cwmllynfell, Swansea, SA9 2FH
- Nature of business
- Plumbing, heat and air-conditioning installation
Graham's Heating & Plumbing Ltd is a 16-year-old private limited company registered in Swansea, company number 07390531, one of 148 plumbing and heating companies in Swansea. Its next accounts are due at Companies House on 28 December 2026, and the CT600 for the period to 28 March 2026 is due at HMRC on 28 March 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 £1,148 (+4.9%) on the year before, to -£22K.
- Net assets rose in 2 of 9 year-on-year comparisons on record.
- Current assets of £15K against £25K owed within a year: 0.6 times cover.
- 1 employee on average during the year.
- Balance sheets on record for 10 years, 2018 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Mar 2025 | -£22K | £15K | £25K | 1 | |
| 31 Mar 2024 | -£24K | £13K | £20K | 1 | |
| 31 Mar 2023 | -£22K | £23K | £21K | 1 | |
| 31 Mar 2022 | -£16K | £26K | £8,619 | 1 | |
| 31 Mar 2021 | -£12K | £15K | £15K | 1 | |
| 31 Mar 2020 | £7,842 | £11K | £2,304 | 1 | |
| 31 Mar 2019 | £12K | £1,790 | £11K | ||
| 30 Mar 2019 | £12K | £1,790 | £11K | 1 | |
| 31 Mar 2018 | £5,926 | £8,652 | £2,002 | ||
| 30 Mar 2018 | £5,926 | £8,652 | £2,002 |
Where Graham's Heating & Plumbing Ltd is registered
The registered office is in Swansea (SA9), in the Neath Port Talbot local authority area, Wales. Show SA9 2FH on a map.
Other trade companies in SA9
- Eidolon Renovations LtdPlumbers and heating engineers
- Michael Jones Renovations LtdProperty developers
- Cyfyng Road Developments LtdFinishing trades
- Orwell’S Accident Repair LtdMechanics and garages
- WLM Car and Commercial Services LtdMotor traders
- Tom Graham Maintenance LtdFinishing trades
- Precious Time Cleaning Solutions LtdCleaning companies
- TD Heating Solutions LtdPlumbers and heating engineers
Also registered at this address
5 other companies use the same registered office as Graham's Heating & Plumbing Ltd.
- Andrew's Landscape Design LtdLandscapers and gardeners
- Fenny Garage LimitedMechanics and garages
- Hinson LimitedProperty developers
- Ken McInnes LimitedCivil engineering
- Maybright Cleaning LimitedCleaning companies
What happens if Graham's Heating & Plumbing Ltd 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 December 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 29 Dec 2026 to 28 Jan 2027 | £150 |
| 1 to 3 months late | 29 Jan 2027 to 28 Mar 2027 | £375 |
| 3 to 6 months late | 29 Mar 2027 to 28 Jun 2027 | £750 |
| More than 6 months late | From 29 Jun 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 29 Mar 2027 | £200 |
| 3 months late | 28 Jun 2027 | another £200 |
| 6 months late | 28 Sep 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 28 Mar 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
- 07390531
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 28 September 2010 (16 years ago)
- Registered office
- Glan Yr Afon House 30 Walters Road, Cwmllynfell, Swansea, SA9 2FH
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 28 March (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 March 2025
- Last confirmation statement
- 18 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 Swansea
Other active plumbing and heating companies registered in Swansea.
- Greens Precise Plumbing & Heating Ltd2020
- GSW & Son Limited2025
- Hale Heating and Plumbing Ltd2020
- Hale Heating and Renewables Ltd2025
- Harry's Heating & Plumbing Ltd2023
- Heat Pump Services Ltd2009
- Heaterup Ltd2024
- Heatsource (Wales) Limited2012
All plumbing and heating companies in Swansea · All trades in Swansea · Plumbers and heating engineers across the UK
Frequently asked questions
When are Graham's Heating & Plumbing Ltd's accounts due?
Graham's Heating & Plumbing Ltd's next accounts are due at Companies House by 28 December 2026 (in 76 days), covering the period to 28 March 2026.
When is Graham's Heating & Plumbing Ltd's CT600 due?
The CT600 for the period to 28 March 2026 is due at HMRC by 28 March 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 29 December 2026.
Is Graham's Heating & Plumbing Ltd still trading?
Graham's Heating & Plumbing Ltd 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 Graham's Heating & Plumbing Ltd do?
Graham's Heating & Plumbing Ltd is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is Graham's Heating & Plumbing Ltd?
Graham's Heating & Plumbing Ltd was incorporated on 28 September 2010, 16 years ago.
What is the penalty if Graham's Heating & Plumbing Ltd 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 Graham's Heating & Plumbing Ltd 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.