- Companies
- Electricians
- London
- Covtek Limited
Covtek Limited
- Company number
- 03816644
- Incorporated
- 29 Jul 199927 years trading
- Registered office
- 128 City Road, London, EC1V 2NX
- Nature of business
- Electrical installation; Other retail sale of food in specialised stores
Covtek Limited is a 27-year-old private limited company registered in London, company number 03816644, one of 3,448 electrical contractors in London. Its next accounts are due at Companies House on 30 November 2026, and the CT600 for the period to 28 February 2026 is due at HMRC on 28 February 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 £160K (+67.3%) on the year before, to £399K.
- Current assets of £333K against £280K owed within a year: 1.2 times cover.
- Balance sheets on record for 2 years, 2015 to 2016.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Jul 2016 | £399K | £263K | £333K | £280K | |
| 31 Jul 2015 | £238K | £138K | £202K | £245K |
Where Covtek Limited is registered
The registered office is in London (EC1V), in the Islington local authority area, London. Show EC1V 2NX on a map.
Other trade companies in EC1V
- Cardiff Electrical Solutions LtdElectricians
- Edemis Construction LtdBuilders
- Zaylan LtdProperty developers
- Pronto Roofing and Construction LtdRoofers
- Instal Systems LtdPlumbers and heating engineers
- J&R Partners LtdBuilders
- The Tile Craft LtdFinishing trades
- Cathal Od Solutions LtdSpecialist contractors
Shared registered office
2,436 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 Covtek 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 30 November 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Dec 2026 to 31 Dec 2026 | £150 |
| 1 to 3 months late | 1 Jan 2027 to 28 Feb 2027 | £375 |
| 3 to 6 months late | 1 Mar 2027 to 31 May 2027 | £750 |
| More than 6 months late | From 1 Jun 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Mar 2027 | £200 |
| 3 months late | 28 May 2027 | another £200 |
| 6 months late | 28 Aug 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 28 Feb 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
- 03816644
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 29 July 1999 (27 years ago)
- Registered office
- 128 City Road, London, EC1V 2NX
- Nature of business
- Electrical installation (SIC 43210)
Other retail sale of food in specialised stores (SIC 47290) - Year end
- 29 February (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 28 February 2025
- Last confirmation statement
- 29 July 2026
- Charges (mortgages)
- 3 outstanding of 4 registered
- Previous names
- Covetek Limited (until 10 Sep 2019)
Cov-Tek Security Systems Ltd (until 10 Sep 2019)
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.
- Cowboy Plumbing and Heating Ltd2025
- Coxxcom Limited2024
- CQT Electrician Ltd2024
- Cranley Group Limited2026
- CRD Electrical Ltd2019
- Credence Contracts Ltd2012
- Crescent Electrical Ltd2016
- Crestview TS Ltd2024
All electrical contractors in London · All trades in London · Electricians across the UK
Frequently asked questions
When are Covtek Limited's accounts due?
Covtek Limited's next accounts are due at Companies House by 30 November 2026 (in 49 days), covering the period to 28 February 2026.
When is Covtek Limited's CT600 due?
The CT600 for the period to 28 February 2026 is due at HMRC by 28 February 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 December 2026.
Is Covtek Limited still trading?
Covtek 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 Covtek Limited do?
Covtek Limited is registered under Electrical installation (SIC 43210); Other retail sale of food in specialised stores (SIC 47290).
How old is Covtek Limited?
Covtek Limited was incorporated on 29 July 1999, 27 years ago.
What is the penalty if Covtek 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 Covtek 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.