- Companies
- Installers
- Rochford
- Onyx Power Services Limited
Onyx Power Services Limited
- Company number
- 13579240
- Incorporated
- 23 Aug 20215 years trading
- Registered office
- Millhouse, 32-38 East Street, Rochford, Essex, SS4 1DB
- Nature of business
- Other construction installation
Onyx Power Services Limited is a 5-year-old private limited company registered in Rochford, company number 13579240, one of 21 installation companies (insulation, lifts, shutters and similar) in Rochford. Its next accounts are due at Companies House on 30 June 2027, and the CT600 for the period to 30 September 2026 is due at HMRC on 30 September 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 £35K (+332.1%) on the year before, to £46K.
- Net assets rose in 3 of 3 year-on-year comparisons on record.
- Current assets of £112K against £96K owed within a year: 1.2 times cover.
- 1 employee on average during the year.
- Balance sheets on record for 4 years, 2022 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 30 Sep 2025 | £46K | £18K | £112K | £96K | 1 |
| 30 Sep 2024 | £11K | £594 | £11K | £13K | 1 |
| 30 Sep 2023 | £240 | £3,535 | £9,644 | £27K | 1 |
| 31 Aug 2022 | -£645 | £1,056 | £13K | £34K | 1 |
Where Onyx Power Services Limited is registered
The registered office is in Rochford (SS4), in the Rochford local authority area, East of England. Show SS4 1DB on a map.
Other trade companies in SS4
- DJ Environmental LimitedSpecialist contractors
- Windles Windows LtdGlaziers
- Cassell Solutions LimitedSpecialist contractors
- Jdloading LtdSpecialist contractors
- MM Groundwork’S & Building Services LtdFinishing trades
- Hart Mep LimitedSpecialist contractors
- CP12 Gas LimitedPlumbers and heating engineers
- John Parker Motorcycles LtdMotor traders
Shared registered office
30 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 Onyx Power 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 30 June 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jul 2027 to 31 Jul 2027 | £150 |
| 1 to 3 months late | 1 Aug 2027 to 30 Sep 2027 | £375 |
| 3 to 6 months late | 1 Oct 2027 to 31 Dec 2027 | £750 |
| More than 6 months late | From 1 Jan 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Oct 2027 | £200 |
| 3 months late | 30 Dec 2027 | another £200 |
| 6 months late | 30 Mar 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Sep 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
- 13579240
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 23 August 2021 (5 years ago)
- Registered office
- Millhouse, 32-38 East Street, Rochford, Essex, SS4 1DB
- Nature of business
- Other construction installation (SIC 43290)
- Year end
- 30 September (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 30 September 2025
- Last confirmation statement
- 28 January 2026
Filing notes for installation companies (insulation, lifts, shutters and similar)
Installation companies (insulation, lifts, shutters, solar and similar) often buy stock and equipment up front, so stock at the year end and capital allowances both affect the tax bill.
Similar companies in Rochford
Other active installation companies (insulation, lifts, shutters and similar) registered in Rochford.
- Rayleigh Fencing Ltd2018
- Ridgelake Construction Ltd2026
- RJ Smith Developments Limited2017
- SGB Windows and Doors Ltd2021
- Tuning Solutions Ltd2015
- U K Systems Limited2007
- Andlee Insulation Services Ltd2019
- Bel-Ingle Limited2002
All installation companies (insulation, lifts, shutters and similar) in Rochford · All trades in Rochford · Installers across the UK
Frequently asked questions
When are Onyx Power Services Limited's accounts due?
Onyx Power Services Limited's next accounts are due at Companies House by 30 June 2027 (in 260 days), covering the period to 30 September 2026.
When is Onyx Power Services Limited's CT600 due?
The CT600 for the period to 30 September 2026 is due at HMRC by 30 September 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 July 2027.
Is Onyx Power Services Limited still trading?
Onyx Power 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 Onyx Power Services Limited do?
Onyx Power Services Limited is registered under Other construction installation (SIC 43290).
How old is Onyx Power Services Limited?
Onyx Power Services Limited was incorporated on 23 August 2021, 5 years ago.
What is the penalty if Onyx Power 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 Onyx Power 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.