- Companies
- Mechanics and garages
- Barnsley
- Onyx Conversions Ltd
Onyx Conversions Ltd
- Company number
- 09754078
- Incorporated
- 28 Aug 201511 years trading
- Registered office
- Unit 20 Fall Bank Industrial Estate, Dodworth, Barnsley, South Yorkshire, S75 3LS
- Nature of business
- Maintenance and repair of motor vehicles
Onyx Conversions Ltd is a 11-year-old private limited company registered in Barnsley, company number 09754078, one of 150 vehicle repair garages in Barnsley. Its next accounts are due at Companies House on 31 May 2027, and the CT600 for the period to 31 August 2026 is due at HMRC on 31 August 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 £4,182 (-5.1%) on the year before, to £78K.
- Net assets rose in 5 of 9 year-on-year comparisons on record.
- Current assets of £84K against £35K owed within a year: 2.4 times cover.
- 2 employees on average during the year.
- Balance sheets on record for 10 years, 2016 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Aug 2025 | £78K | £84K | £35K | 2 | |
| 31 Aug 2024 | £82K | £132K | £75K | 2 | |
| 31 Aug 2023 | £113K | £132K | £36K | 3 | |
| 31 Aug 2022 | £82K | £97K | £39K | 3 | |
| 31 Aug 2021 | £9,927 | £103K | £106K | 3 | |
| 31 Aug 2020 | £65K | £189K | £107K | 1 | |
| 31 Aug 2019 | £123K | £255K | £162K | ||
| 31 Aug 2018 | £40K | £172K | £153K | ||
| 31 Aug 2017 | £21K | £221K | £233K | ||
| 31 Aug 2016 | £4,305 | £176K | £200K |
Where Onyx Conversions Ltd is registered
The registered office is in Barnsley (S75), in the Barnsley local authority area, Yorkshire and The Humber. Show S75 3LS on a map.
Other trade companies in S75
- DMF LtdPlumbers and heating engineers
- Lee England Garage Doors LtdFinishing trades
- Top Spec Plastering and Rendering LtdPlasterers
- Mapp Motors LtdMechanics and garages
- Rspstore LtdMotor traders
- A-Side Boilers LtdInstallers
- Barnbrook Landscaping LtdLandscapers and gardeners
- North Park (Woolley) LimitedProperty developers
Shared registered office
43 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 Conversions 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 31 May 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jun 2027 to 30 Jun 2027 | £150 |
| 1 to 3 months late | 1 Jul 2027 to 31 Aug 2027 | £375 |
| 3 to 6 months late | 1 Sep 2027 to 30 Nov 2027 | £750 |
| More than 6 months late | From 1 Dec 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Sep 2027 | £200 |
| 3 months late | 30 Nov 2027 | another £200 |
| 6 months late | 29 Feb 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Aug 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
- 09754078
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 28 August 2015 (11 years ago)
- Registered office
- Unit 20 Fall Bank Industrial Estate, Dodworth, Barnsley, South Yorkshire, S75 3LS
- Nature of business
- Maintenance and repair of motor vehicles (SIC 45200)
- Year end
- 31 August (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 August 2025
- Last confirmation statement
- 28 March 2026
Filing notes for vehicle repair garages
Garages hold parts stock and often own diagnostic equipment and ramps, which qualify for capital allowances.
Similar companies in Barnsley
Other active vehicle repair garages registered in Barnsley.
- P & P Auto Engineers Limited2003
- P9 Race Shop Limited1987
- Phoenix Recovery 24/7 Limited2017
- Porsche & Euro Car Specialists Ltd2016
- Portland Street Garage Ltd2023
- Prestige Car Deliveries Limited2018
- PW Fittings Limited2023
- R D Hanwell & Son Limited2015
All vehicle repair garages in Barnsley · All trades in Barnsley · Mechanics and garages across the UK
Frequently asked questions
When are Onyx Conversions Ltd's accounts due?
Onyx Conversions Ltd's next accounts are due at Companies House by 31 May 2027 (in 230 days), covering the period to 31 August 2026.
When is Onyx Conversions Ltd's CT600 due?
The CT600 for the period to 31 August 2026 is due at HMRC by 31 August 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 June 2027.
Is Onyx Conversions Ltd still trading?
Onyx Conversions 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 Onyx Conversions Ltd do?
Onyx Conversions Ltd is registered under Maintenance and repair of motor vehicles (SIC 45200).
How old is Onyx Conversions Ltd?
Onyx Conversions Ltd was incorporated on 28 August 2015, 11 years ago.
What is the penalty if Onyx Conversions 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 Onyx Conversions 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.