1. Companies
  2. Mechanics and garages
  3. London
  4. First Diesel Injection Limited

First Diesel Injection Limited

ActiveTotal exemption (full) accountsMechanics and garagesLondon
Company number
04176339
Incorporated
9 Mar 200125 years trading
Registered office
163 Herne Hill, London, SE24 9LR
Nature of business
Maintenance and repair of motor vehicles
Accounts due in
79 days
31 Dec 2026
Net assets
-£106K▼
At 31 Mar 2025
Employees
2
Average during the year
From the Companies House register, 1 Oct 2026

First Diesel Injection Limited is a 25-year-old private limited company registered in London, company number 04176339, one of 2,410 vehicle repair garages in London. 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.

Accounts due
31 Dec 2026
in 79 days
For the period to 31 Mar 2026
CT600 due
31 Mar 2027
in 169 days
Period 1 Apr 2025 to 31 Mar 2026
Corporation tax payment
1 Jan 2027
in 80 days
9 months and 1 day after the period end
Confirmation statement
8 Jun 2027
in 238 days
Last made up to 25 May 2026

Is this your company?

File the accounts to Companies House and the CT600 to HMRC yourself with A.X.E.L Filing. One set of questions, both filings, £49 flat. No accountant, no subscription.

File for First Diesel Injection Limited

Or get a reminder before each deadline

Free. We email you 60, 30, 14, 7 and 1 days before the accounts, CT600 and confirmation statement are due. Unsubscribe in one click.

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 £107K on the year before, to -£106K.
  • Net assets rose in 0 of 9 year-on-year comparisons on record.
  • 2 employees on average during the year.
  • Balance sheets on record for 10 years, 2016 to 2025.

Net assets by year

Net assets at each year end, 2016 to 2025-£100K-£50K£031 March 2016: net assets £4,835£4,835201631 March 2017: net assets £1,632£1,632201731 March 2018: net assets £1,609£1,60920184 April 2019: net assets £1,476£1,47620194 April 2020: net assets £1,356£1,356202031 March 2021: net assets £1,236£1,236202131 March 2022: net assets £1,116£1,116202231 March 2023: net assets £1,013£1,013202331 March 2024: net assets £910£910202431 March 2025: net assets -£106K-£106K2025
Net assets at each year end, 2016 to 2025-£100K-£50K£031 March 2016: net assets £4,835£4,835'1631 March 2017: net assets £1,632£1,632'1731 March 2018: net assets £1,609£1,609'184 April 2019: net assets £1,476£1,476'194 April 2020: net assets £1,356£1,356'2031 March 2021: net assets £1,236£1,236'2131 March 2022: net assets £1,116£1,116'2231 March 2023: net assets £1,013£1,013'2331 March 2024: net assets £910£910'2431 March 2025: net assets -£106K-£106K'25
Year endNet assetsCashCurrent assetsOwed within a yearEmployees
31 Mar 2025-£106K£286K2
31 Mar 2024£910£6,735£186K2
31 Mar 2023£1,013£143£6,981£187K2
31 Mar 2022£1,116£143£7,084£187K1
31 Mar 2021£1,236£263£7,204£187K1
4 Apr 2020£1,356£383£7,324£187K1
4 Apr 2019£1,476£503£7,444£187K
31 Mar 2018£1,609£623£11K£190K
31 Mar 2017£1,632£633£5,600£185K
31 Mar 2016£4,835£766£177K

Where First Diesel Injection Limited is registered

First Diesel Injection Limited's registered office on a map of the UK

The registered office is in London (SE24), in the Southwark local authority area, London. Show SE24 9LR on a map.

Other trade companies in SE24

Shared registered office

44 companies on our pages use this registered office address. An address shared this widely is usually an accountant's office or a company formation agent's service address, not where the business trades from.

What happens if First Diesel Injection 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 HouseAccounts deliveredPenalty
Up to 1 month late1 Jan 2027 to 31 Jan 2027£150
1 to 3 months late1 Feb 2027 to 31 Mar 2027£375
3 to 6 months late1 Apr 2027 to 30 Jun 2027£750
More than 6 months lateFrom 1 Jul 2027£1,500

Penalties double if the accounts were also late the year before.

HMRC (CT600)FromPenalty
1 day late1 Apr 2027£200
3 months late30 Jun 2027another £200
6 months late30 Sep 2027HMRC estimates the tax and adds 10% of the unpaid tax
12 months late31 Mar 2028another 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
04176339
Status
Active
Company type
Private limited company
Incorporated
9 March 2001 (25 years ago)
Registered office
163 Herne Hill, London, SE24 9LR
Nature of business
Maintenance and repair of motor vehicles (SIC 45200)
Year end
31 March (accounting reference date)
Accounts type
Total exemption (full)
Last accounts made up to
31 March 2025
Last confirmation statement
25 May 2026
Charges (mortgages)
1 outstanding of 1 registered

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 London

Other active vehicle repair garages registered in London.

All vehicle repair garages in London · All trades in London · Mechanics and garages across the UK

Frequently asked questions

When are First Diesel Injection Limited's accounts due?

First Diesel Injection Limited's next accounts are due at Companies House by 31 December 2026 (in 79 days), covering the period to 31 March 2026.

When is First Diesel Injection 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 First Diesel Injection Limited still trading?

First Diesel Injection 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 First Diesel Injection Limited do?

First Diesel Injection Limited is registered under Maintenance and repair of motor vehicles (SIC 45200).

How old is First Diesel Injection Limited?

First Diesel Injection Limited was incorporated on 9 March 2001, 25 years ago.

What is the penalty if First Diesel Injection 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 First Diesel Injection Limited on Companies House for filed documents, officers and the full history.

Report an error on this page

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.

File accounts + CT600File now£49Let's talk