- Companies
- Electricians
- Potters Bar
- Thornton Electrical (London) Limited
Thornton Electrical (London) Limited
- Company number
- 05700400
- Incorporated
- 7 Feb 200620 years trading
- Registered office
- Five Ways, 57/59 Hatfield Road, Potters Bar, Hertfordshire, EN6 1HS
- Nature of business
- Electrical installation
Thornton Electrical (London) Limited is a 20-year-old private limited company registered in Potters Bar, company number 05700400, one of 52 electrical contractors in Potters Bar. 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 down £48K (-47.1%) on the year before, to £54K.
- Net assets rose in 6 of 8 year-on-year comparisons on record.
- Current assets of £112K against £89K owed within a year: 1.2 times cover.
- 14 employees on average, up from 10 the year before.
- 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 Mar 2025 | £54K | £112K | £89K | 14 | |
| 31 Mar 2024 | £103K | £159K | £101K | 10 | |
| 31 Mar 2023 | £72K | £146K | £128K | 10 | |
| 31 Mar 2022 | £22K | £95K | £101K | 8 | |
| 31 Mar 2021 | £26K | £67K | £78K | 7 | |
| 31 Mar 2020 | £9,135 | £47K | £82K | 9 | |
| 31 Mar 2019 | £821 | £46K | £97K | ||
| 31 Mar 2018 | £520 | £49K | £101K | ||
| 31 Mar 2017 | £256 | £36K | £98K | ||
| 31 Mar 2016 | £43K | £76K |
Where Thornton Electrical (London) Limited is registered
The registered office is in Potters Bar (EN6), in the Hertsmere local authority area, East of England. Show EN6 1HS on a map.
Other trade companies in EN6
- Hertfordshire Roofing and Guttering Repairs LtdRoofers
- Vata RC Frames LtdSpecialist contractors
- Avanti Airtech LimitedPlumbers and heating engineers
- Azmaj Group LtdFinishing trades
- Burbridge Roofing and Build LtdBuilders
- Roman Way Holdings LtdProperty developers
- Westshire Property Services LimitedFinishing trades
- Oska Auto LtdMechanics and garages
Also registered at this address
3 other companies use the same registered office as Thornton Electrical (London) Limited.
- JKS Contracts LimitedCivil engineering
- Medgold LimitedCivil engineering
- Phlush LtdBuilders
What happens if Thornton Electrical (London) Limited 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
- 05700400
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 7 February 2006 (20 years ago)
- Registered office
- Five Ways, 57/59 Hatfield Road, Potters Bar, Hertfordshire, EN6 1HS
- Nature of business
- Electrical installation (SIC 43210)
- Year end
- 31 March (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 March 2025
- Last confirmation statement
- 7 February 2026
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 Potters Bar
Other active electrical contractors registered in Potters Bar.
- TR Installations Ltd2017
- Xtech Electrical Ltd.2014
- Zaptap Limited2020
- 3L Electrical Limited2006
- Ag Electrical Services (London) Ltd2024
- Agvelectrical Ltd2026
- Archie Property Maintenance Limited2018
- Art4 Electrical Ltd2022
All electrical contractors in Potters Bar · All trades in Potters Bar · Electricians across the UK
Frequently asked questions
When are Thornton Electrical (London) Limited's accounts due?
Thornton Electrical (London) Limited's next accounts are due at Companies House by 31 December 2026 (in 79 days), covering the period to 31 March 2026.
When is Thornton Electrical (London) Limited'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 Thornton Electrical (London) Limited still trading?
Thornton Electrical (London) Limited 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 Thornton Electrical (London) Limited do?
Thornton Electrical (London) Limited is registered under Electrical installation (SIC 43210).
How old is Thornton Electrical (London) Limited?
Thornton Electrical (London) Limited was incorporated on 7 February 2006, 20 years ago.
What is the penalty if Thornton Electrical (London) Limited 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 Thornton Electrical (London) Limited 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.