- Companies
- Plumbers and heating engineers
- Southampton
- Synergy Plumbing, Heating & Renewables Ltd
Synergy Plumbing, Heating & Renewables Ltd
- Company number
- 13536997
- Incorporated
- 29 Jul 20215 years trading
- Registered office
- 6 Mottisfont Close, Regents Park, Southampton, Hampshire, SO15 4JH
- Nature of business
- Plumbing, heat and air-conditioning installation
Synergy Plumbing, Heating & Renewables Ltd is a 5-year-old private limited company registered in Southampton, company number 13536997, one of 246 plumbing and heating companies in Southampton. Its next accounts are due at Companies House on 31 October 2026, and its first CT600 is due at HMRC on 31 July 2026.
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 £6,088 (+100.2%) on the year before, to £11.
- Current assets of £6,517 against £14K owed within a year: 0.5 times cover.
- 1 employee on average during the year.
- Balance sheets on record for 3 years, 2022 to 2024.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Jul 2024 | £11 | £6,517 | £14K | 1 | |
| 31 Jul 2023 | -£6,077 | £6,707 | £6,707 | £23K | 1 |
| 31 Jul 2022 | -£5,370 | £2,516 | £3,768 | £23K | 1 |
Who runs and owns Synergy Plumbing, Heating & Renewables Ltd
From the Companies House register. Individuals are shown by initials only; the full register is on Companies House.
Officer
| Name | Role | Appointed |
|---|---|---|
| M*** C*** | Director | Jul 2021 |
Person with significant control
Where Synergy Plumbing, Heating & Renewables Ltd is registered
The registered office is in Southampton (SO15), in the Southampton local authority area, South East. Show SO15 4JH on a map.
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What happens if Synergy Plumbing, Heating & Renewables 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 October 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Nov 2026 to 30 Nov 2026 | £150 |
| 1 to 3 months late | 1 Dec 2026 to 31 Jan 2027 | £375 |
| 3 to 6 months late | 1 Feb 2027 to 30 Apr 2027 | £750 |
| More than 6 months late | From 1 May 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Feb 2027 | £200 |
| 3 months late | 30 Apr 2027 | another £200 |
| 6 months late | 31 Jul 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Jan 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
- 13536997
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 29 July 2021 (5 years ago)
- Registered office
- 6 Mottisfont Close, Regents Park, Southampton, Hampshire, SO15 4JH
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 31 January (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 July 2024
- Last confirmation statement
- 4 July 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.
- T Air Ltd2020
- TC McClatchey Plumbing & Heating Limited2011
- Tec Plumbing and Heating Ltd2026
- Tetra Ltd2021
- TG Marine Plumbing Solutions Ltd2024
- THB Plumbing & Heating Ltd2024
- Thermatech Heating & Plumbing Ltd2025
- Thermatech Home Services Ltd2026
All plumbing and heating companies in Southampton · All trades in Southampton · Plumbers and heating engineers across the UK
Frequently asked questions
When are Synergy Plumbing, Heating & Renewables Ltd's accounts due?
Synergy Plumbing, Heating & Renewables Ltd's next accounts are due at Companies House by 31 October 2026 (in 18 days), covering the period to 31 January 2026.
When is Synergy Plumbing, Heating & Renewables Ltd's CT600 due?
The first accounts cover more than 12 months, so there are two Company Tax Returns: one for the 12 months to 31 July 2025, due by 31 July 2026, and one for the period to 31 January 2026, due by 31 January 2027. Corporation tax is payable 9 months and 1 day after the end of each.
Is Synergy Plumbing, Heating & Renewables Ltd still trading?
Synergy Plumbing, Heating & Renewables 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 Synergy Plumbing, Heating & Renewables Ltd do?
Synergy Plumbing, Heating & Renewables Ltd is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is Synergy Plumbing, Heating & Renewables Ltd?
Synergy Plumbing, Heating & Renewables Ltd was incorporated on 29 July 2021, 5 years ago.
Who runs Synergy Plumbing, Heating & Renewables Ltd?
Synergy Plumbing, Heating & Renewables Ltd has 1 active director, the longest-serving appointed in Jul 2021. Their names and service addresses are on the Companies House register.
Who owns Synergy Plumbing, Heating & Renewables Ltd?
One person or company has significant control of Synergy Plumbing, Heating & Renewables Ltd: an individual (owns 75% or more of the shares).
What is the penalty if Synergy Plumbing, Heating & Renewables 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 Synergy Plumbing, Heating & Renewables 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.