- Companies
- Electricians
- Canterbury
- Convert Energy Ltd
Convert Energy Ltd
- Company number
- 09350129
- Incorporated
- 11 Dec 201411 years trading
- Registered office
- Convert Energy Ltd, 22C Barton Business Park, New Dover Road, Canterbury, CT1 3AA
- Nature of business
- Electrical installation; Plumbing, heat and air-conditioning installation; Wholesale of hardware, plumbing and heating equipment and supplies; Engineering related scientific and technical consulting activities
Convert Energy Ltd is a 11-year-old private limited company registered in Canterbury, company number 09350129, one of 50 electrical contractors in Canterbury. Its next accounts are due at Companies House on 31 December 2026, and the CT600 for the period to 31 March 2026 is due at HMRC on 31 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 £34K (+8.6%) on the year before, to £426K.
- Net assets rose in 4 of 7 year-on-year comparisons on record.
- Current assets of £366K against £8,825 owed within a year: more than 10 times cover.
- 10 employees on average during the year.
- Balance sheets on record for 9 years, 2015 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Mar 2025 | £426K | £141K | £366K | £8,825 | 10 |
| 31 Mar 2024 | £392K | £202K | £313K | £16K | 10 |
| 31 Mar 2023 | £471K | £308K | £494K | £107K | 9 |
| 31 Mar 2022 | £293K | £447K | £974K | £650K | 4 |
| 31 Mar 2021 | £222K | £315K | £569K | £236K | 4 |
| 31 Mar 2020 | £8,812 | £6,002 | £27K | £24K | 4 |
| 31 Mar 2019 | £13K | £20K | £20K | £14K | 3 |
| 31 Mar 2017 | -£3,190 | £2,286 | £2,365 | £5,555 | 2 |
| 31 Dec 2015 | £5 |
Public contracts won
Convert Energy Ltd has 7 public sector contract awards on record; the ones with their own published value total £3.9M, from 2021 to 2026. Source: Contracts Finder and Find a Tender award notices. For 2 of them the published figure is a shared or multi-year ceiling (a framework place, a multi-supplier award, or more than a small company could hold alone), so no value is shown. These were matched by the company's exact name because the notice gave no company number.
Awards by year
Main buyers
- UK Research & Innovation3 awards
- UK Research & Innovation (UKRI)1 award
- Commercial Services1 award
- Kent County Council (t/a LASER Energy)1 award
- UK Research and Innovation1 award
| Buyer | Contract | Value | Awarded |
|---|---|---|---|
| UK Research & Innovation (UKRI) | UKRI-5987 Chilbolton Phase II PV | £68K | 27 Mar 2026 |
| Commercial Services | Supply and/or Install of Rooftop Solar Photovoltaic Systems and Associated Equipment Y24013 | Ceiling, not shown | 2 Aug 2025 |
| Kent County Council (t/a LASER Energy) | Supply and/or Install of Rooftop Solar Photovoltaic Systems and Associated Equipment Y24013 | Ceiling, not shown | 2 Aug 2025 |
| UK Research & Innovation | UKRI-2965 STFC Photovoltaic (PV) and Solar Thermal maintenance and management of PV warranty works | £292K | 8 Jan 2024 |
| UK Research and Innovation | GB-Didcot: UKRI-2467 R109 & R123 PV Systems | £242K | 12 Dec 2022 |
| UK Research & Innovation | UKRI-1685 - Solar PV System at RAL | £2.1M | 5 Nov 2021 |
| UK Research & Innovation | Supply, Installation and Commissioning of Multiple Solar Photovoltaic Systems (Roof) | £1.2M | 8 Jan 2021 |
Where Convert Energy Ltd is registered
The registered office is in Canterbury (CT1), in the Canterbury local authority area, South East. Show CT1 3AA on a map.
Other trade companies in CT1
- Rapid Tyre Fixer LtdMechanics and garages
- Decoramia LtdPainters and decorators
- MDS Gas, Electrical and Renewables LtdInstallers
- Turi 85 LtdMotor traders
- Ah 58 LtdMechanics and garages
- Soliman LtdBuilders
- Kent Cooling Company LtdPlumbers and heating engineers
- Mantram Property LtdProperty developers
What happens if Convert Energy 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 December 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jan 2027 to 31 Jan 2027 | £150 |
| 1 to 3 months late | 1 Feb 2027 to 31 Mar 2027 | £375 |
| 3 to 6 months late | 1 Apr 2027 to 30 Jun 2027 | £750 |
| More than 6 months late | From 1 Jul 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Apr 2027 | £200 |
| 3 months late | 30 Jun 2027 | another £200 |
| 6 months late | 30 Sep 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 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
- 09350129
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 11 December 2014 (11 years ago)
- Registered office
- Convert Energy Ltd, 22C Barton Business Park, New Dover Road, Canterbury, CT1 3AA
- Nature of business
- Electrical installation (SIC 43210)
Plumbing, heat and air-conditioning installation (SIC 43220)
Wholesale of hardware, plumbing and heating equipment and supplies (SIC 46740)
Engineering related scientific and technical consulting activities (SIC 71122) - Year end
- 31 March (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 March 2025
- Last confirmation statement
- 28 March 2026
- Charges (mortgages)
- 1 outstanding of 1 registered
Filing notes for electrical contractors
Electrical contracting companies are often a director plus a van and tools. Most fall within the micro-entity rules, so the accounts filed at Companies House are short, and the CT600 carries the tax detail.
Similar companies in Canterbury
Other active electrical contractors registered in Canterbury.
- Ecoenergyinstall Limited2021
- Ecotherm-Mep Ltd2025
- Efm Electrical & Building Ltd.2017
- Electrical Structure Ltd2024
- Elham Valley Electrics Ltd2021
- Elite Electrical (South East) Ltd2025
- Ev Chargers Kent Ltd2020
- Funnell Electrical Services Ltd2019
All electrical contractors in Canterbury · All trades in Canterbury · Electricians across the UK
Frequently asked questions
When are Convert Energy Ltd's accounts due?
Convert Energy Ltd's next accounts are due at Companies House by 31 December 2026 (in 79 days), covering the period to 31 March 2026.
When is Convert Energy Ltd's CT600 due?
The CT600 for the period to 31 March 2026 is due at HMRC by 31 March 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 January 2027.
Is Convert Energy Ltd still trading?
Convert Energy 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 Convert Energy Ltd do?
Convert Energy Ltd is registered under Electrical installation (SIC 43210); Plumbing, heat and air-conditioning installation (SIC 43220); Wholesale of hardware, plumbing and heating equipment and supplies (SIC 46740); Engineering related scientific and technical consulting activities (SIC 71122).
How old is Convert Energy Ltd?
Convert Energy Ltd was incorporated on 11 December 2014, 11 years ago.
Has Convert Energy Ltd won public sector contracts?
Yes. Convert Energy Ltd has 7 contract awards from public bodies on Contracts Finder and Find a Tender (those with their own published value total £3.9M), most recently from UK Research & Innovation (UKRI).
What is the penalty if Convert Energy 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 Convert Energy 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.