- Companies
- Motor traders
- Southport
- Ocean Diagnostics Ltd
Ocean Diagnostics Ltd
- Company number
- 17264885
- Incorporated
- 5 Jun 2026
- Registered office
- 89 Zetland Street, Southport, PR9 9DL
- Nature of business
- Sale of used cars and light motor vehicles; Maintenance and repair of motor vehicles; Wholesale trade of motor vehicle parts and accessories; Other engineering activities
Ocean Diagnostics Ltd is a newly incorporated private limited company registered in Southport, company number 17264885, one of 50 motor trade companies in Southport. Its next accounts are due at Companies House on 5 March 2028, and its first CT600 is due at HMRC on 4 June 2028.
Key dates
This company has not filed accounts yet. First accounts are due 21 months after incorporation, and the first period can run longer than a year.
Is this your company?
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Where Ocean Diagnostics Ltd is registered
The registered office is in Southport (PR9), in the Sefton local authority area, North West. Show PR9 9DL on a map.
Other trade companies in PR9
- Cortex Fire and Security LtdMachinery repair and installation
- Desmo Engineering & Motorcycle Services LtdMotor traders
- Bird Building & Construction LtdBuilders
- Hit Happens Arc LimitedMechanics and garages
- Nja Construction Services LtdProperty developers
- Silverline Renovations LtdPlasterers
- Nestra Living LtdFinishing trades
- Churchtown Tree Surgery LimitedLandscapers and gardeners
Also registered at this address
1 other company uses the same registered office as Ocean Diagnostics Ltd.
- Oscar Garage (Southport) LimitedMechanics and garages
What happens if Ocean 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 5 March 2028.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 6 Mar 2028 to 5 Apr 2028 | £150 |
| 1 to 3 months late | 6 Apr 2028 to 5 Jun 2028 | £375 |
| 3 to 6 months late | 6 Jun 2028 to 5 Sep 2028 | £750 |
| More than 6 months late | From 6 Sep 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jul 2028 | £200 |
| 3 months late | 30 Sep 2028 | another £200 |
| 6 months late | 30 Dec 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Jun 2029 | 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
- 17264885
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 5 June 2026
- Registered office
- 89 Zetland Street, Southport, PR9 9DL
- Nature of business
- Sale of used cars and light motor vehicles (SIC 45112)
Maintenance and repair of motor vehicles (SIC 45200)
Wholesale trade of motor vehicle parts and accessories (SIC 45310)
Other engineering activities (SIC 71129) - Year end
- 30 June (accounting reference date)
- Accounts type
- No accounts filed yet
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 Southport
Other active motor trade companies registered in Southport.
- Personal Car Finders UK Ltd2018
- Precision Auto Group Ltd2023
- Prescot Motor Factors Ltd2025
- Qcarz.UK Ltd2021
- Rad Motors Ltd2020
- Sgssouthport Ltd2023
- Si Meditalk Limited2022
- Southbank Tyres Limited2010
All motor trade companies in Southport · All trades in Southport · Motor traders across the UK
Frequently asked questions
When are Ocean Diagnostics Ltd's accounts due?
Ocean Diagnostics Ltd's next accounts are due at Companies House by 5 March 2028 (in 510 days), covering the period to 30 June 2027.
When is Ocean Diagnostics Ltd's CT600 due?
The first accounts cover more than 12 months, so there are two Company Tax Returns: one for the 12 months to 4 June 2027, due by 4 June 2028, and one for the period to 30 June 2027, due by 30 June 2028. Corporation tax is payable 9 months and 1 day after the end of each.
Is Ocean Diagnostics Ltd still trading?
Ocean Diagnostics 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 Ocean Diagnostics Ltd do?
Ocean Diagnostics Ltd is registered under Sale of used cars and light motor vehicles (SIC 45112); Maintenance and repair of motor vehicles (SIC 45200); Wholesale trade of motor vehicle parts and accessories (SIC 45310); Other engineering activities (SIC 71129).
How old is Ocean Diagnostics Ltd?
Ocean Diagnostics Ltd was incorporated on 5 June 2026, less than a year ago.
What is the penalty if Ocean 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 Ocean Diagnostics 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.