- Companies
- Electricians
- London
- Crux Services Ltd
Crux Services Ltd
- Company number
- 10566609
- Incorporated
- 17 Jan 20179 years trading
- Registered office
- 4 Cheyne Close, London, NW4 3NH
- Nature of business
- Electrical installation
Crux Services Ltd is a 9-year-old private limited company registered in London, company number 10566609, one of 3,448 electrical contractors in London. Its next accounts are due at Companies House on 16 October 2026, and the CT600 for the period to 16 January 2026 is due at HMRC on 16 January 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 £24K (-177.5%) on the year before, to -£11K.
- Net assets rose in 4 of 7 year-on-year comparisons on record.
- Current assets of £719 against £8,019 owed within a year: 0.1 times cover.
- 2 employees on average during the year.
- Balance sheets on record for 8 years, 2018 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 16 Jan 2025 | -£11K | £719 | £8,019 | 2 | |
| 16 Jan 2024 | £14K | £60 | £9,691 | 2 | |
| 31 Jan 2023 | -£9,041 | £1,956 | £6,215 | 2 | |
| 31 Jan 2022 | -£14 | £8,526 | £3,017 | 2 | |
| 31 Jan 2021 | £6,151 | £1,387 | £1,538 | 1 | |
| 31 Jan 2020 | £2,566 | £2,903 | £337 | 1 | |
| 31 Jan 2019 | £1,156 | £3,877 | £2,721 | ||
| 31 Jan 2018 | £168 | £1,290 | £1,122 |
Where Crux Services Ltd is registered
The registered office is in London (NW4), in the Barnet local authority area, London. Show NW4 3NH on a map.
Other trade companies in NW4
- City Flow Plumbing & Heating 1 LtdPlumbers and heating engineers
- Avenhall LimitedBuilders
- Steamdeep Cleaning LtdCleaning companies
- Westchester Services LimitedFacilities management
- Amier LtdBuilders
- Remmets LtdProperty developers
- Solar Nest LtdElectricians
- Cranko Construction LtdFinishing trades
Also registered at this address
1 other company uses the same registered office as Crux Services Ltd.
- Complete Site Solutions LtdFinishing trades
What happens if Crux Services 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 16 October 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 17 Oct 2026 to 16 Nov 2026 | £150 |
| 1 to 3 months late | 17 Nov 2026 to 16 Jan 2027 | £375 |
| 3 to 6 months late | 17 Jan 2027 to 16 Apr 2027 | £750 |
| More than 6 months late | From 17 Apr 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 17 Jan 2027 | £200 |
| 3 months late | 16 Apr 2027 | another £200 |
| 6 months late | 16 Jul 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 16 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
- 10566609
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 17 January 2017 (9 years ago)
- Registered office
- 4 Cheyne Close, London, NW4 3NH
- Nature of business
- Electrical installation (SIC 43210)
- Year end
- 16 January (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 16 January 2025
- Last confirmation statement
- 16 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 London
Other active electrical contractors registered in London.
- Crystal 3 Electrical Ltd2025
- Crystal Environmental Solution Limited2025
- Csi Global Holdings Limited2023
- CTC Capital Ltd2018
- Cubic Interiors Limited2002
- Current Cloud Solutions Ltd2025
- Current Company London Ltd2025
- Current Electrical & Audio Visual Ltd.2009
All electrical contractors in London · All trades in London · Electricians across the UK
Frequently asked questions
When are Crux Services Ltd's accounts due?
Crux Services Ltd's next accounts are due at Companies House by 16 October 2026 (in 3 days), covering the period to 16 January 2026.
When is Crux Services Ltd's CT600 due?
The CT600 for the period to 16 January 2026 is due at HMRC by 16 January 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 17 October 2026.
Is Crux Services Ltd still trading?
Crux Services 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 Crux Services Ltd do?
Crux Services Ltd is registered under Electrical installation (SIC 43210).
How old is Crux Services Ltd?
Crux Services Ltd was incorporated on 17 January 2017, 9 years ago.
What is the penalty if Crux Services 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 Crux Services 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.