- Companies
- Mechanics and garages
- Ashby-De-La-Zouch
- The Diagnostic Group Limited
The Diagnostic Group Limited
- Company number
- 13642405
- Incorporated
- 24 Sep 20215 years trading
- Registered office
- 3 Rushton Yard, Market Street, Ashby-De-La-Zouch, LE65 1AL
- Nature of business
- Maintenance and repair of motor vehicles; Retail sale via mail order houses or via Internet
The Diagnostic Group Limited is a 5-year-old private limited company registered in Ashby-De-La-Zouch, company number 13642405, one of 15 vehicle repair garages in Ashby-De-La-Zouch. 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 down £15K (-31.5%) on the year before, to -£62K.
- Net assets rose in 0 of 3 year-on-year comparisons on record.
- Current assets of £57K against £125K owed within a year: 0.5 times cover.
- 1 employee on average, down from 2 the year before.
- 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 | -£62K | £57K | £125K | 1 | |
| 30 Sep 2024 | -£47K | £57K | £143K | 2 | |
| 30 Sep 2023 | -£25K | £74K | £111K | 2 | |
| 30 Sep 2022 | -£18K | £28K | £58K | 2 |
Where The Diagnostic Group Limited is registered
The registered office is in Ashby-De-La-Zouch (LE65), in the North West Leicestershire local authority area, East Midlands. Show LE65 1AL on a map.
Other trade companies in LE65
- Ashby Woodland and Works LtdLandscapers and gardeners
- Glow & Go Cleaning LtdCleaning companies
- RC Reeves Construction LtdBuilders
- One Services (Warwick) LtdMechanics and garages
- Ashby Carpentry and Construction LtdBuilders
- Trade Bridge Home Solutions LimitedInstallers
- TJ Gas Services LtdPlumbers and heating engineers
- Sun Dance Gas LtdPlumbers and heating engineers
Also registered at this address
9 other companies use the same registered office as The Diagnostic Group Limited.
- Blue Valley Construction LtdProperty developers
- Delicious Driveways & Landscaping LtdCivil engineering
- KMR Brickwork LtdBuilders
- LJW Vehicle Services and Repairs LimitedMechanics and garages
- Mooaba LtdProperty developers
- SJ Topliss LtdPlumbers and heating engineers
- SR. Trophy LimitedMechanics and garages
- Three Pillars Contractors LimitedProperty developers
- Waterworth Kitchens LimitedJoiners and carpenters
What happens if The Diagnostic Group 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
- 13642405
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 24 September 2021 (5 years ago)
- Registered office
- 3 Rushton Yard, Market Street, Ashby-De-La-Zouch, LE65 1AL
- Nature of business
- Maintenance and repair of motor vehicles (SIC 45200)
Retail sale via mail order houses or via Internet (SIC 47910) - Year end
- 30 September (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 30 September 2025
- Last confirmation statement
- 23 September 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 Ashby-De-La-Zouch
Other active vehicle repair garages registered in Ashby-De-La-Zouch.
- Wainwrights Vehicle Solutions Ltd2023
- Wham Mechanical Ltd2025
- Allen's Autocare Limited2009
- C & G Auto Electrics Limited2010
- C&O Autos Ltd2026
- Castle Garage (Ashby) Limited2004
- CPC Electrical Services Ltd2005
- LJW Vehicle Services and Repairs Limited2025
All vehicle repair garages in Ashby-De-La-Zouch · All trades in Ashby-De-La-Zouch · Mechanics and garages across the UK
Frequently asked questions
When are The Diagnostic Group Limited's accounts due?
The Diagnostic Group 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 The Diagnostic Group 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 The Diagnostic Group Limited still trading?
The Diagnostic Group Limited is listed as active on the Companies House register (checked 13 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 The Diagnostic Group Limited do?
The Diagnostic Group Limited is registered under Maintenance and repair of motor vehicles (SIC 45200); Retail sale via mail order houses or via Internet (SIC 47910).
How old is The Diagnostic Group Limited?
The Diagnostic Group Limited was incorporated on 24 September 2021, 5 years ago.
What is the penalty if The Diagnostic Group 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 The Diagnostic Group Limited on Companies House for filed documents, officers and the full history.
Based on the Companies House register (snapshot 1 Oct 2026, rechecked 13 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.