- Companies
- Mechanics and garages
- Wimbledon
- M&D Diagnostics Limited
M&D Diagnostics Limited
- Company number
- 13512504
- Incorporated
- 15 Jul 20215 years trading
- Registered office
- WSM, Connect House 133-137 Alexandra Road, Wimbledon, London, SW19 7JY
- Nature of business
- Maintenance and repair of motor vehicles
M&D Diagnostics Limited is a 5-year-old private limited company registered in Wimbledon, company number 13512504, one of 6 vehicle repair garages in Wimbledon. 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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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 £17K (-80.1%) on the year before, to £4,333.
- Net assets rose in 1 of 3 year-on-year comparisons on record.
- Current assets of £7,020 against £7,471 owed within a year: 0.9 times cover.
- No employees reported for the latest year (directors are often not counted as employees).
- 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 |
|---|---|---|---|---|---|
| 31 Mar 2025 | £4,333 | £7,020 | £7,471 | 0 | |
| 31 Mar 2024 | £22K | £22K | £7,091 | 2 | |
| 31 Mar 2023 | £27K | £46K | £29K | 2 | |
| 31 Mar 2022 | £11K | £20K | £22K | 2 |
Where M&D Diagnostics Limited is registered
The registered office is in Wimbledon (SW19), in the Merton local authority area, London. Show SW19 7JY on a map.
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Also registered at this address
6 other companies use the same registered office as M&D Diagnostics Limited.
- Artefacts London LimitedFinishing trades
- Exploration Surf UK LimitedProperty developers
- Lintel D B LimitedProperty developers
- Murray Properties (Edmonton) LimitedProperty developers
- Pass & Co. (Croydon) LimitedSpecialist contractors
- Worthy Farm LimitedProperty developers
What happens if M&D Diagnostics 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 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
- 13512504
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 15 July 2021 (5 years ago)
- Registered office
- WSM, Connect House 133-137 Alexandra Road, Wimbledon, London, SW19 7JY
- Nature of business
- Maintenance and repair of motor vehicles (SIC 45200)
- Year end
- 31 March (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 March 2025
- Last confirmation statement
- 14 July 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 Wimbledon
Other active vehicle repair garages registered in Wimbledon.
- Merton Auto Technics Limited2005
- Wimbledon Autocentre Limited2018
- Aq Autos Ltd2018
- Car Craft (Wimbledon) Ltd2015
- Jones Bros Garage Ltd2020
All vehicle repair garages in Wimbledon · All trades in Wimbledon · Mechanics and garages across the UK
Frequently asked questions
When are M&D Diagnostics Limited's accounts due?
M&D Diagnostics Limited's next accounts are due at Companies House by 31 December 2026 (in 80 days), covering the period to 31 March 2026.
When is M&D Diagnostics Limited'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 M&D Diagnostics Limited still trading?
M&D Diagnostics 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 M&D Diagnostics Limited do?
M&D Diagnostics Limited is registered under Maintenance and repair of motor vehicles (SIC 45200).
How old is M&D Diagnostics Limited?
M&D Diagnostics Limited was incorporated on 15 July 2021, 5 years ago.
What is the penalty if M&D Diagnostics 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 M&D Diagnostics 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.