- Companies
- Motor traders
- Isleworth
- On Board Defence Ltd
On Board Defence Ltd
- Company number
- 04515993
- Incorporated
- 21 Aug 200224 years trading
- Registered office
- 5 Spur Road, Isleworth, TW7 5BD
- Nature of business
- Retail trade of motor vehicle parts and accessories
On Board Defence Ltd is a 24-year-old private limited company registered in Isleworth, company number 04515993, one of 41 motor trade companies in Isleworth. 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 £949K (-95.9%) on the year before, to £40K.
- Net assets rose in 5 of 9 year-on-year comparisons on record.
- Current assets of £235K against £178K owed within a year: 1.3 times cover.
- 4 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 Mar 2025 | £40K | £82K | £235K | £178K | 4 |
| 31 Mar 2024 | £990K | £56K | £1.1M | £174K | 4 |
| 31 Mar 2023 | £1M | £306K | £1.2M | £174K | 4 |
| 31 Mar 2022 | £950K | £255K | £1.2M | £198K | 5 |
| 31 Mar 2021 | £781K | £603K | £985K | £214K | 6 |
| 31 Mar 2020 | £606K | £411K | £917K | £354K | 6 |
| 31 Mar 2019 | £368K | £96K | £388K | £75K | 7 |
| 31 Mar 2018 | £436K | £247K | £483K | £90K | 9 |
| 31 Mar 2017 | £433K | £194K | £442K | £53K | 8 |
| 31 Mar 2016 | £442K | £284K | £523K |
Where On Board Defence Ltd is registered
The registered office is in Isleworth (TW7), in the Hounslow local authority area, London. Show TW7 5BD on a map.
Other trade companies in TW7
- Pracom LtdMachinery repair and installation
- V&R Construction Group LtdBuilders
- Gio Construction LimitedBuilders
- S & H Bodywork LtdMechanics and garages
- KS Garage Isleworth LtdMotor traders
- C Wiseman Services LtdCleaning companies
- Avenida Developments LtdProperty developers
- Courtesy Cars Group UK LtdMotor traders
Also registered at this address
2 other companies use the same registered office as On Board Defence Ltd.
- NRKK LtdBuilders
- NRKK Services LtdBuilders
What happens if On Board Defence 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
- 04515993
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 21 August 2002 (24 years ago)
- Registered office
- 5 Spur Road, Isleworth, TW7 5BD
- Nature of business
- Retail trade of motor vehicle parts and accessories (SIC 45320)
- Year end
- 31 March (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 March 2025
- Last confirmation statement
- 31 October 2025
- Charges (mortgages)
- 0 outstanding of 3 registered
- Previous names
- Catloc Ltd (until 5 Nov 2014)
Plarco Ltd (until 17 Aug 2011)
Secure Solution Lock Services Limited (until 20 Apr 2011)
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 Isleworth
Other active motor trade companies registered in Isleworth.
- Pitlane Parts Ltd2026
- Preloved Motors Ltd2025
- Revel Custom Motorcycles Ltd2021
- RR Shepherd Motors Limited Limited2025
- Seb Car Parts Recycling Ltd2020
- Shoni Shokai UK Limited2011
- Silverline Motor Hire Limited2024
- SK Scooters Limited2024
All motor trade companies in Isleworth · All trades in Isleworth · Motor traders across the UK
Frequently asked questions
When are On Board Defence Ltd's accounts due?
On Board Defence Ltd's next accounts are due at Companies House by 31 December 2026 (in 79 days), covering the period to 31 March 2026.
When is On Board Defence 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 On Board Defence Ltd still trading?
On Board Defence 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 On Board Defence Ltd do?
On Board Defence Ltd is registered under Retail trade of motor vehicle parts and accessories (SIC 45320).
How old is On Board Defence Ltd?
On Board Defence Ltd was incorporated on 21 August 2002, 24 years ago.
What is the penalty if On Board Defence 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 On Board Defence 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.