- Companies
- Electricians
- London
- C.D.I. Electrical Services Limited
C.D.I. Electrical Services Limited
- Company number
- 01851343
- Incorporated
- 28 Sep 198442 years trading
- Registered office
- 16 Russell Road, London, N13 4RP
- Nature of business
- Electrical installation
C.D.I. Electrical Services Limited is a 42-year-old private limited company registered in London, company number 01851343, one of 3,448 electrical contractors in London. Its next accounts are due at Companies House on 29 December 2026, and the CT600 for the period to 29 March 2026 is due at HMRC on 29 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 £5,431 (+318%) on the year before, to £7,139.
- Net assets rose in 5 of 9 year-on-year comparisons on record.
- Current assets of £23K against £22K owed within a year: 1.1 times cover.
- 1 employee on average, down from 2 the year before.
- Balance sheets on record for 10 years, 2017 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Mar 2025 | £7,139 | £4,856 | £23K | £22K | 1 |
| 31 Mar 2024 | £1,708 | £1,791 | £24K | £12K | 2 |
| 31 Mar 2023 | £8,720 | £2,007 | £30K | £4,353 | 2 |
| 29 Mar 2023 | £8,720 | £30K | £4,353 | 2 | |
| 29 Mar 2022 | £10K | £31K | £3,074 | 2 | |
| 31 Mar 2021 | £7,336 | £34K | £16K | 2 | |
| 31 Mar 2020 | -£5,856 | £15K | £23K | 2 | |
| 31 Mar 2019 | £2,006 | £16K | £16K | 2 | |
| 31 Mar 2018 | £366 | £2,155 | £3,967 | 2 | |
| 31 Mar 2017 | £103 | -£700 | £1,375 | 2 |
Where C.D.I. Electrical Services Limited is registered
The registered office is in London (N13), in the Enfield local authority area, London. Show N13 4RP on a map.
Other trade companies in N13
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- Meti Flow Solutions LtdBuilders
- XP Plastering & Rendering LtdBuilders
- MD Crafted LtdSpecialist contractors
- Skilled Trades UK LtdPainters and decorators
- Danni Plumbing LtdPlumbers and heating engineers
What happens if C.D.I. Electrical Services 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 29 December 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 30 Dec 2026 to 29 Jan 2027 | £150 |
| 1 to 3 months late | 30 Jan 2027 to 29 Mar 2027 | £375 |
| 3 to 6 months late | 30 Mar 2027 to 29 Jun 2027 | £750 |
| More than 6 months late | From 30 Jun 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 30 Mar 2027 | £200 |
| 3 months late | 29 Jun 2027 | another £200 |
| 6 months late | 29 Sep 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 29 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
- 01851343
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 28 September 1984 (42 years ago)
- Registered office
- 16 Russell Road, London, N13 4RP
- Nature of business
- Electrical installation (SIC 43210)
- Year end
- 29 March (accounting reference date)
- Accounts type
- Unaudited abridged
- Last accounts made up to
- 31 March 2025
- Last confirmation statement
- 31 December 2025
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 London
Other active electrical contractors registered in London.
- C.E.D Electrical Contractors Ltd2022
- C.Hurst Electrical Contractors Limited2006
- Ca NW Electrical Ltd2026
- Cable Synergy Ltd2013
- Cable Web Ltd2025
- Caleb&Tyler Services Ltd2020
- Callfix Services Ltd2026
- Cama Networks Projects Ltd2020
All electrical contractors in London · All trades in London · Electricians across the UK
Frequently asked questions
When are C.D.I. Electrical Services Limited's accounts due?
C.D.I. Electrical Services Limited's next accounts are due at Companies House by 29 December 2026 (in 77 days), covering the period to 29 March 2026.
When is C.D.I. Electrical Services Limited's CT600 due?
The CT600 for the period to 29 March 2026 is due at HMRC by 29 March 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 30 December 2026.
Is C.D.I. Electrical Services Limited still trading?
C.D.I. Electrical Services 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 C.D.I. Electrical Services Limited do?
C.D.I. Electrical Services Limited is registered under Electrical installation (SIC 43210).
How old is C.D.I. Electrical Services Limited?
C.D.I. Electrical Services Limited was incorporated on 28 September 1984, 42 years ago.
What is the penalty if C.D.I. Electrical Services 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 C.D.I. Electrical Services 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.