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- TSJ Diagnostics Ltd
Company profile · Motor traders
TSJ Diagnostics Ltd
TSJ Diagnostics Ltd is a 8-year-old private limited company registered in Wolverhampton, company number 11016909, one of 304 motor trade companies in Wolverhampton. Its next accounts are due at Companies House on 31 December 2026, and the CT600 for the period to 31 March 2026 is due at HMRC on 31 March 2027.
Key dates
Worked out from the year end and filing history on the Companies House register.
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Financial snapshot, 2025
From the balance sheet at 31 March 2025, as filed at Companies House.
TSJ Diagnostics Ltd over the years
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 £4,248 (+47.6%) on the year before, to £13K.
- Net assets rose in 6 of 7 year-on-year comparisons on record.
- 1 employee 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 |
|---|---|---|---|---|---|
| 31 Mar 2025 | £13K | £33K | £98K | 1 | |
| 31 Mar 2024 | £8,922 | £43K | £59K | 1 | |
| 31 Mar 2023 | £8,176 | £51K | £67K | 1 | |
| 31 Mar 2022 | £6,130 | £73K | £95K | 1 | |
| 31 Mar 2021 | £11K | £91K | £106K | 1 | |
| 31 Mar 2020 | £11K | £52K | £61K | 1 | |
| 31 Mar 2019 | £9,502 | £72K | £72K | ||
| 31 Mar 2018 | £3,389 | £26K | £29K |
Where TSJ Diagnostics Ltd is registered
The registered office is in Wolverhampton (WV8), in the South Staffordshire local authority area, West Midlands. Show WV8 1PT on a map.
Other trade companies in WV8
- Corespace Design LimitedProperty developers
- Valour Contractors LtdFinishing trades
- Onsite Heat Pumps LtdPlumbers and heating engineers
- Riapropertiesgroup LtdFinishing trades
- Brar Construction LtdBuilders
- Aml Heatpump Solutions LtdPlumbers and heating engineers
- Gab Engineering LtdCivil engineering
- RMD Auto Tech LimitedMechanics and garages
Also registered at this address
12 other companies use the same registered office as TSJ Diagnostics Ltd.
- Aaa Electrics LtdElectricians
- Artech Carpentry LimitedJoiners and carpenters
- Assett Property Maintenance LimitedFinishing trades
- DBH (Services) LtdFinishing trades
- GDJ Contracts LtdFinishing trades
- GSP and Sons LtdFinishing trades
- M & K Auto Solutions LtdMotor traders
- Midlands Fibre Optic Splicing & Testing LtdFinishing trades
- Riapropertiesgroup LtdFinishing trades
- SRP Interiors LtdPlasterers
- V G Egan Flooring LtdFloor and wall tilers
- We Build Contractors LimitedBuilders
What happens if TSJ Diagnostics 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 December 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jan 2027 to 31 Jan 2027 | £150 |
| 1 to 3 months late | 1 Feb 2027 to 31 Mar 2027 | £375 |
| 3 to 6 months late | 1 Apr 2027 to 30 Jun 2027 | £750 |
| More than 6 months late | From 1 Jul 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Apr 2027 | £200 |
| 3 months late | 30 Jun 2027 | another £200 |
| 6 months late | 30 Sep 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Mar 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
- 11016909
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 17 October 2017 (8 years ago)
- Registered office
- 13 Wolverhampton Road, Codsall, Wolverhampton, West Midlands, WV8 1PT
- Nature of business
- Sale of used cars and light motor vehicles (SIC 45112)
Maintenance and repair of motor vehicles (SIC 45200)
Other business support service activities n.e.c. (SIC 82990) - Year end
- 31 March (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 March 2025
- Last confirmation statement
- 24 August 2025
Filing notes for motor trade companies
Motor trade companies hold vehicle stock, and how that stock is valued at the year end moves the profit directly. Some use the VAT margin scheme.
Similar companies in Wolverhampton
Other active motor trade companies registered in Wolverhampton.
- Tyres on the Road Ltd2025
- UK Auto Cars Limited2026
- UK Bumper Center Limited2026
- United Auto Brokerage Ltd2014
- United Motors 4U Limited2025
- Urban Performance Limited2022
- V&S Motors UK Ltd2026
- V4 Traders Limited2022
All motor trade companies in Wolverhampton · All trades in Wolverhampton · Motor traders across the UK
Frequently asked questions
When are TSJ Diagnostics Ltd's accounts due?
TSJ Diagnostics Ltd's next accounts are due at Companies House by 31 December 2026 (in 80 days), covering the period to 31 March 2026.
When is TSJ Diagnostics Ltd's CT600 due?
The CT600 for the period to 31 March 2026 is due at HMRC by 31 March 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 January 2027.
Is TSJ Diagnostics Ltd still trading?
TSJ Diagnostics Ltd is listed as active on the Companies House register (checked 12 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 TSJ Diagnostics Ltd do?
TSJ Diagnostics Ltd is registered under Sale of used cars and light motor vehicles (SIC 45112); Maintenance and repair of motor vehicles (SIC 45200); Other business support service activities n.e.c. (SIC 82990).
How old is TSJ Diagnostics Ltd?
TSJ Diagnostics Ltd was incorporated on 17 October 2017, 8 years ago.
What is the penalty if TSJ Diagnostics 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 TSJ Diagnostics Ltd on Companies House for filed documents, officers and the full history.
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Based on the Companies House register (snapshot 1 Oct 2026, rechecked 12 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.