- Companies
- Electricians
- Ruislip
- Elektron London Ltd
Elektron London Ltd
- Company number
- 16202124
- Incorporated
- 22 Jan 20251 year trading
- Registered office
- Suite 93 Rye House, 161 High Street, Ruislip, HA4 8JN
- Nature of business
- Electrical installation
Elektron London Ltd is a 1-year-old private limited company registered in Ruislip, company number 16202124, one of 89 electrical contractors in Ruislip. Its next accounts are due at Companies House on 22 October 2026, and its first CT600 is due at HMRC on 21 January 2027.
Key dates
This company has not filed accounts yet. First accounts are due 21 months after incorporation, and the first period can run longer than a year.
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Where Elektron London Ltd is registered
The registered office is in Ruislip (HA4), in the Hillingdon local authority area, London. Show HA4 8JN on a map.
Other trade companies in HA4
- SSC London LtdGroundworks and demolition
- DCR Industriltdal LtdPainters and decorators
- Katardino Monten for General Contracting and Supplies LtdCivil engineering
- Apex Build & Move LtdBuilders
- Ridgeway Building Contracts LimitedProperty developers
- Azya Farah LtdBuilders
- Howdens Roofing & Guttering LimitedRoofers
- Vetro Glazing LimitedGlaziers
What happens if Elektron London 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 22 October 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 23 Oct 2026 to 22 Nov 2026 | £150 |
| 1 to 3 months late | 23 Nov 2026 to 22 Jan 2027 | £375 |
| 3 to 6 months late | 23 Jan 2027 to 22 Apr 2027 | £750 |
| More than 6 months late | From 23 Apr 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
- 16202124
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 22 January 2025 (1 year ago)
- Registered office
- Suite 93 Rye House, 161 High Street, Ruislip, HA4 8JN
- Nature of business
- Electrical installation (SIC 43210)
- Year end
- 31 January (accounting reference date)
- Accounts type
- No accounts filed yet
- Last confirmation statement
- 21 January 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 Ruislip
Other active electrical contractors registered in Ruislip.
- Elevate Electrical Contractors Limited2021
- Emerald House Green Environments Limited2019
- Gennybasher Power Services Limited2019
- Graves Electrical Limited2024
- Gsa Services Ltd2018
- GWS Roofing Ltd2003
- Home Care Utilities Ltd2026
- I.P.S Electrical Installations Ltd2018
All electrical contractors in Ruislip · All trades in Ruislip · Electricians across the UK
Frequently asked questions
When are Elektron London Ltd's accounts due?
Elektron London Ltd's next accounts are due at Companies House by 22 October 2026 (in 9 days), covering the period to 31 January 2026.
When is Elektron London 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 21 January 2026, due by 21 January 2027, 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 Elektron London Ltd still trading?
Elektron London 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 Elektron London Ltd do?
Elektron London Ltd is registered under Electrical installation (SIC 43210).
How old is Elektron London Ltd?
Elektron London Ltd was incorporated on 22 January 2025, 1 year ago.
What is the penalty if Elektron London 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 Elektron London 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.