- Companies
- Specialist contractors
- London
- Firma Aj Limited
Firma Aj Limited
- Company number
- 16708022
- Incorporated
- 10 Sep 20251 year trading
- Registered office
- 78 Sinclair Road, London, E4 8PR
- Nature of business
- Other specialised construction activities n.e.c.
Firma Aj Limited is a 1-year-old private limited company registered in London, company number 16708022, one of 4,318 specialist construction companies in London. Its next accounts are due at Companies House on 10 June 2027, and its first CT600 is due at HMRC on 9 September 2027.
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.
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Where Firma Aj Limited is registered
The registered office is in London (E4), in the Waltham Forest local authority area, London. Show E4 8PR on a map.
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What happens if Firma Aj 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 10 June 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 11 Jun 2027 to 10 Jul 2027 | £150 |
| 1 to 3 months late | 11 Jul 2027 to 10 Sep 2027 | £375 |
| 3 to 6 months late | 11 Sep 2027 to 10 Dec 2027 | £750 |
| More than 6 months late | From 11 Dec 2027 | £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
- 16708022
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 10 September 2025 (1 year ago)
- Registered office
- 78 Sinclair Road, London, E4 8PR
- Nature of business
- Other specialised construction activities n.e.c. (SIC 43999)
- Year end
- 30 September (accounting reference date)
- Accounts type
- No accounts filed yet
- Last confirmation statement
- 9 September 2026
Filing notes for specialist construction companies
Specialist contractors often work under CIS for main contractors. Retentions held back by the customer still count towards turnover once the work is done.
Similar companies in London
Other active specialist construction companies registered in London.
- First Call Constructions Ltd2025
- First Int. Project Limited2014
- First Point Services Ltd2018
- First Renewable Developments Limited2011
- Firstfix Property Maintenance Ltd2024
- Fiscal Pay Limited2025
- Fitfix UK Ltd2023
- Five at Heart Ltd2016
All specialist construction companies in London · All trades in London · Specialist contractors across the UK
Frequently asked questions
When are Firma Aj Limited's accounts due?
Firma Aj Limited's next accounts are due at Companies House by 10 June 2027 (in 241 days), covering the period to 30 September 2026.
When is Firma Aj Limited's CT600 due?
The first accounts cover more than 12 months, so there are two Company Tax Returns: one for the 12 months to 9 September 2026, due by 9 September 2027, and one for the period to 30 September 2026, due by 30 September 2027. Corporation tax is payable 9 months and 1 day after the end of each.
Is Firma Aj Limited still trading?
Firma Aj 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 Firma Aj Limited do?
Firma Aj Limited is registered under Other specialised construction activities n.e.c. (SIC 43999).
How old is Firma Aj Limited?
Firma Aj Limited was incorporated on 10 September 2025, 1 year ago.
What is the penalty if Firma Aj 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 Firma Aj 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.