- Companies
- Plumbers and heating engineers
- Southampton
- A1 Complete Plumbing & Heating Ltd
A1 Complete Plumbing & Heating Ltd
- Company number
- 06272295
- Incorporated
- 7 Jun 200719 years trading
- Registered office
- Partnership House, 84 Lodge Road, Southampton, SO14 6RG
- Nature of business
- Plumbing, heat and air-conditioning installation
A1 Complete Plumbing & Heating Ltd is a 19-year-old private limited company registered in Southampton, company number 06272295, one of 246 plumbing and heating companies in Southampton. Its next accounts are due at Companies House on 30 September 2027, and the CT600 for the period to 31 December 2026 is due at HMRC on 31 December 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 £13K (-37.7%) on the year before, to £22K.
- Net assets rose in 6 of 9 year-on-year comparisons on record.
- Current assets of £42K against £20K owed within a year: 2.1 times cover.
- 2 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 |
|---|---|---|---|---|---|
| 31 Dec 2025 | £22K | £42K | £20K | 2 | |
| 31 Dec 2024 | £35K | £74K | £44K | 2 | |
| 31 Dec 2023 | £50K | £70K | £29K | 2 | |
| 31 Dec 2022 | £79K | £96K | £29K | 4 | |
| 31 Dec 2021 | £60K | £108K | £44K | 7 | |
| 31 Dec 2020 | £57K | £88K | £35K | 3 | |
| 31 Dec 2019 | £41K | £58K | £21K | ||
| 31 Dec 2018 | £34K | £51K | £23K | ||
| 31 Dec 2017 | £27K | £67K | £46K | ||
| 31 Dec 2016 | £12K | £40K | £47K | £43K |
Where A1 Complete Plumbing & Heating Ltd is registered
The registered office is in Southampton (SO14), in the Southampton local authority area, South East. Show SO14 6RG on a map.
Other trade companies in SO14
- Cat Garage LtdMechanics and garages
- Sonix LtdBuilders
- Vanie & Dick LtdBuilders
- 33 Motors LtdMotor traders
- Pure Light Cleaning LtdCleaning companies
- Cccjr Trading LimitedMotor traders
- Otess LtdFloor and wall tilers
- Bevertex LimitedElectricians
Shared registered office
29 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 Complete Plumbing & Heating 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 30 September 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Oct 2027 to 31 Oct 2027 | £150 |
| 1 to 3 months late | 1 Nov 2027 to 31 Dec 2027 | £375 |
| 3 to 6 months late | 1 Jan 2028 to 31 Mar 2028 | £750 |
| More than 6 months late | From 1 Apr 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jan 2028 | £200 |
| 3 months late | 31 Mar 2028 | another £200 |
| 6 months late | 30 Jun 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Dec 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
- 06272295
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 7 June 2007 (19 years ago)
- Registered office
- Partnership House, 84 Lodge Road, Southampton, SO14 6RG
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 31 December (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 December 2025
- Last confirmation statement
- 3 June 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 Southampton
Other active plumbing and heating companies registered in Southampton.
- Abc Heatpumps Limited2018
- Able Plumbing and Drainage Limited2025
- Afterglow Heating Limited2017
- Ai Plumbing and Heating Southampton Limited2023
- Aic Heating and Plumbing Services Ltd2024
- Air 2 Heat Renewable Energy Ltd2022
- Air Cool Mechanical Services Ltd2018
- Ajb Mechanical Services Limited2016
All plumbing and heating companies in Southampton · All trades in Southampton · Plumbers and heating engineers across the UK
Frequently asked questions
When are A1 Complete Plumbing & Heating Ltd's accounts due?
A1 Complete Plumbing & Heating Ltd's next accounts are due at Companies House by 30 September 2027 (in 352 days), covering the period to 31 December 2026.
When is A1 Complete Plumbing & Heating Ltd's CT600 due?
The CT600 for the period to 31 December 2026 is due at HMRC by 31 December 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 October 2027.
Is A1 Complete Plumbing & Heating Ltd still trading?
A1 Complete Plumbing & Heating 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 Complete Plumbing & Heating Ltd do?
A1 Complete Plumbing & Heating Ltd is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is A1 Complete Plumbing & Heating Ltd?
A1 Complete Plumbing & Heating Ltd was incorporated on 7 June 2007, 19 years ago.
What is the penalty if A1 Complete Plumbing & Heating 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 Complete Plumbing & Heating 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.