JCDN Ltd
- Company number
- 17307805
- Incorporated
- 29 Jun 2026
- Registered office
- College House, C/O Asml, 17 King Edwards Road, Ruislip, HA4 7AE
- Nature of business
- Construction of railways and underground railways; Other engineering activities; Other business support service activities n.e.c.
JCDN Ltd is a newly incorporated private limited company registered in Ruislip, company number 17307805, one of 34 civil engineering contractors in Ruislip. Its next accounts are due at Companies House on 29 March 2028, and its first CT600 is due at HMRC on 28 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.
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Where JCDN Ltd is registered
The registered office is in Ruislip (HA4), in the Hillingdon local authority area, London. Show HA4 7AE on a map.
Other trade companies in HA4
- SSC London LtdGroundworks and demolition
- DCR Industriltdal LtdPainters and decorators
- Katardino Monten for General Contracting and Supplies LtdCivil engineering
- Apex Build & Move LtdBuilders
- Ridgeway Building Contracts LimitedProperty developers
- Azya Farah LtdBuilders
- Howdens Roofing & Guttering LimitedRoofers
- Vetro Glazing LimitedGlaziers
Also registered at this address
10 other companies use the same registered office as JCDN Ltd.
- Advanced Construction Iver LtdBuilders
- Baork Consultancy & Construction Services LtdInstallers
- Dudman Construction LimitedBuilders
- Julius Petraitis LimitedJoiners and carpenters
- Lawn Complete LtdLandscapers and gardeners
- Literiver Services LimitedElectricians
- Pine Strippers LtdSpecialist contractors
- Robert Cronin Building Services LimitedBuilders
- Simba Construction and Design LtdBuilders
- Strongbuild LimitedBuilders
What happens if JCDN 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 29 March 2028.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 30 Mar 2028 to 29 Apr 2028 | £150 |
| 1 to 3 months late | 30 Apr 2028 to 29 Jun 2028 | £375 |
| 3 to 6 months late | 30 Jun 2028 to 29 Sep 2028 | £750 |
| More than 6 months late | From 30 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
- 17307805
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 29 June 2026
- Registered office
- College House, C/O Asml, 17 King Edwards Road, Ruislip, HA4 7AE
- Nature of business
- Construction of railways and underground railways (SIC 42120)
Other engineering activities (SIC 71129)
Other business support service activities n.e.c. (SIC 82990) - Year end
- 30 June (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 Ruislip
Other active civil engineering contractors registered in Ruislip.
- Larryanprojects Ltd2023
- MSM Contractors Ltd2022
- Murphy Commercial Services Limited2016
- N Goddard Civil Engineering Ltd2022
- Nicholas Rail Limited2014
- Nidaa Al Rahma Water & Development Projects Ltd2026
- NRG Gas Solutions Ltd2019
- Offshore World Ltd2025
All civil engineering contractors in Ruislip · All trades in Ruislip · Civil engineering across the UK
Frequently asked questions
When are JCDN Ltd's accounts due?
JCDN Ltd's next accounts are due at Companies House by 29 March 2028 (in 534 days), covering the period to 30 June 2027.
When is JCDN 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 28 June 2027, due by 28 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 JCDN Ltd still trading?
JCDN 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 JCDN Ltd do?
JCDN Ltd is registered under Construction of railways and underground railways (SIC 42120); Other engineering activities (SIC 71129); Other business support service activities n.e.c. (SIC 82990).
How old is JCDN Ltd?
JCDN Ltd was incorporated on 29 June 2026, less than a year ago.
What is the penalty if JCDN 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 JCDN 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.