- Companies
- Civil engineering
- Harrow
- JNJ Engineering Limited
JNJ Engineering Limited
- Company number
- 17483996
- Incorporated
- 27 Sep 2026
- Registered office
- 100 Leamington Crescent, Harrow, HA2 9HQ
- Nature of business
- Construction of other civil engineering projects n.e.c.; Other building completion and finishing
JNJ Engineering Limited is a newly incorporated private limited company registered in Harrow, company number 17483996, one of 121 civil engineering contractors in Harrow. Its next accounts are due at Companies House on 27 June 2028, and its first CT600 is due at HMRC on 26 September 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.
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Where JNJ Engineering Limited is registered
The registered office is in Harrow (HA2), in the Harrow local authority area, London. Show HA2 9HQ on a map.
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Also registered at this address
1 other company uses the same registered office as JNJ Engineering Limited.
- Jana Engineering LtdCivil engineering
What happens if JNJ Engineering 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 27 June 2028.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 28 Jun 2028 to 27 Jul 2028 | £150 |
| 1 to 3 months late | 28 Jul 2028 to 27 Sep 2028 | £375 |
| 3 to 6 months late | 28 Sep 2028 to 27 Dec 2028 | £750 |
| More than 6 months late | From 28 Dec 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Oct 2028 | £200 |
| 3 months late | 30 Dec 2028 | another £200 |
| 6 months late | 30 Mar 2029 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Sep 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
- 17483996
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 27 September 2026
- Registered office
- 100 Leamington Crescent, Harrow, HA2 9HQ
- Nature of business
- Construction of other civil engineering projects n.e.c. (SIC 42990)
Other building completion and finishing (SIC 43390) - Year end
- 30 September (accounting reference date)
- Accounts type
- No accounts filed yet
Filing notes for civil engineering contractors
Civil engineering contractors usually carry plant and machinery, so capital allowances (the annual investment allowance and the main pool) do much of the work in the corporation tax computation.
Similar companies in Harrow
Other active civil engineering contractors registered in Harrow.
- John Duffy Ltd2023
- K Engineering Ltd2023
- K. R. Interiors Limited2003
- Kirti Construction Limited2014
- Laar Prime Engineering Ltd2016
- Lexstone Building Limited2012
- Lixus Rail Ltd2018
- M K Comm Limited2016
All civil engineering contractors in Harrow · All trades in Harrow · Civil engineering across the UK
Frequently asked questions
When are JNJ Engineering Limited's accounts due?
JNJ Engineering Limited's next accounts are due at Companies House by 27 June 2028 (in 624 days), covering the period to 30 September 2027.
When is JNJ Engineering 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 26 September 2027, due by 26 September 2028, and one for the period to 30 September 2027, due by 30 September 2028. Corporation tax is payable 9 months and 1 day after the end of each.
Is JNJ Engineering Limited still trading?
JNJ Engineering 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 JNJ Engineering Limited do?
JNJ Engineering Limited is registered under Construction of other civil engineering projects n.e.c. (SIC 42990); Other building completion and finishing (SIC 43390).
How old is JNJ Engineering Limited?
JNJ Engineering Limited was incorporated on 27 September 2026, less than a year ago.
What is the penalty if JNJ Engineering 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 JNJ Engineering 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.