- Companies
- Plumbers and heating engineers
- Dorchester
- A1 Plumbing & Heating Services (UK) Ltd
A1 Plumbing & Heating Services (UK) Ltd
- Company number
- 08329908
- Incorporated
- 13 Dec 201213 years trading
- Registered office
- 18 High West Street, Dorchester, Dorset, DT1 1UW
- Nature of business
- Plumbing, heat and air-conditioning installation
A1 Plumbing & Heating Services (UK) Ltd is a 13-year-old private limited company registered in Dorchester, company number 08329908, one of 46 plumbing and heating companies in Dorchester. Its next accounts are due at Companies House on 31 August 2027, and the CT600 for the period to 30 November 2026 is due at HMRC on 30 November 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 down £8,517 (-16.7%) on the year before, to £43K.
- Net assets rose in 6 of 9 year-on-year comparisons on record.
- Current assets of £110K against £79K owed within a year: 1.4 times cover.
- 4 employees 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 |
|---|---|---|---|---|---|
| 30 Nov 2025 | £43K | £57K | £110K | £79K | 4 |
| 30 Nov 2024 | £51K | £56K | £128K | £91K | 4 |
| 30 Nov 2023 | £40K | £45K | £102K | £81K | 5 |
| 30 Nov 2022 | £38K | £38K | £123K | £99K | 5 |
| 30 Nov 2021 | £12K | £8,780 | £80K | £86K | 5 |
| 30 Nov 2020 | £3,685 | £9,597 | £78K | £84K | 4 |
| 30 Nov 2019 | £5,941 | £21K | £31K | £32K | 3 |
| 30 Nov 2018 | £3,693 | £24K | £54K | £54K | 4 |
| 30 Nov 2017 | £7,190 | £15K | £39K | £33K | 2 |
| 30 Nov 2016 | £1,056 | £11K | £21K | £22K |
Who runs and owns A1 Plumbing & Heating Services (UK) Ltd
From the Companies House register. Individuals are shown by initials only; the full register is on Companies House.
Officers (2)
| Name | Role | Appointed |
|---|---|---|
| I*** M*** | Director | Dec 2012 |
| S*** P*** | Director | Dec 2015 |
1 former officer
| Name | Role | Appointed | Left |
|---|---|---|---|
| S*** C*** | Director | Jan 2013 | Aug 2015 |
People with significant control (2)
Where A1 Plumbing & Heating Services (UK) Ltd is registered
The registered office is in Dorchester (DT1), in the Dorset local authority area, South West. Show DT1 1UW on a map.
Other trade companies in DT1
- Wareham MOT LimitedMechanics and garages
- Coastal Crest Dorset Cleaning Company LimitedCleaning companies
- Hybrid Superstructures LtdBuilders
- Solo Construction & Development LimitedBuilders
- Guardian Home Improvements LimitedFinishing trades
- Dorset Cars LtdMotor traders
- Rebecca Scaffolding LtdScaffolders
- Fox Roofing & Leadworks LtdRoofers
Shared registered office
66 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 A1 Plumbing & Heating Services (UK) 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 31 August 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Sep 2027 to 30 Sep 2027 | £150 |
| 1 to 3 months late | 1 Oct 2027 to 30 Nov 2027 | £375 |
| 3 to 6 months late | 1 Dec 2027 to 29 Feb 2028 | £750 |
| More than 6 months late | From 1 Mar 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Dec 2027 | £200 |
| 3 months late | 29 Feb 2028 | another £200 |
| 6 months late | 30 May 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Nov 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
- 08329908
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 13 December 2012 (13 years ago)
- Registered office
- 18 High West Street, Dorchester, Dorset, DT1 1UW
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 30 November (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 30 November 2025
- Last confirmation statement
- 13 December 2025
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 Dorchester
Other active plumbing and heating companies registered in Dorchester.
- Abbas Gas Services Limited2001
- Alb Plumbing and Heating Services Limited2016
- Anthony Holland Plumbing and Heating Limited2009
- Aquaheat Services Limited2006
- Blandford Heating Limited2023
- Boilerman Limited2000
- Caplen Plumbing and Heating Limited2010
- Colby Plumbing & Heating Limited2017
All plumbing and heating companies in Dorchester · All trades in Dorchester · Plumbers and heating engineers across the UK
Frequently asked questions
When are A1 Plumbing & Heating Services (UK) Ltd's accounts due?
A1 Plumbing & Heating Services (UK) Ltd's next accounts are due at Companies House by 31 August 2027 (in 322 days), covering the period to 30 November 2026.
When is A1 Plumbing & Heating Services (UK) Ltd's CT600 due?
The CT600 for the period to 30 November 2026 is due at HMRC by 30 November 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 September 2027.
Is A1 Plumbing & Heating Services (UK) Ltd still trading?
A1 Plumbing & Heating Services (UK) 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 A1 Plumbing & Heating Services (UK) Ltd do?
A1 Plumbing & Heating Services (UK) Ltd is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is A1 Plumbing & Heating Services (UK) Ltd?
A1 Plumbing & Heating Services (UK) Ltd was incorporated on 13 December 2012, 13 years ago.
Who runs A1 Plumbing & Heating Services (UK) Ltd?
A1 Plumbing & Heating Services (UK) Ltd has 2 active directors, the longest-serving appointed in Dec 2012. Their names and service addresses are on the Companies House register.
Who owns A1 Plumbing & Heating Services (UK) Ltd?
2 people or companies have significant control of A1 Plumbing & Heating Services (UK) Ltd: an individual (owns 50% to 75% of the shares); an individual (owns 50% to 75% of the shares).
What is the penalty if A1 Plumbing & Heating Services (UK) 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 A1 Plumbing & Heating Services (UK) 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.