- Companies
- Civil engineering
- Covent Garden
- JDD Engineering Services Ltd
JDD Engineering Services Ltd
- Company number
- 15966289
- Incorporated
- 19 Sep 20242 years trading
- Registered office
- 71-75 Shelton Street, Covent Garden, London, WC2H 9JQ
- Nature of business
- Construction of railways and underground railways
JDD Engineering Services Ltd is a 2-year-old private limited company registered in Covent Garden, company number 15966289, one of 132 civil engineering contractors in Covent Garden. Its next accounts are due at Companies House on 30 June 2027, and the CT600 for the period to 30 September 2026 is due at HMRC on 30 September 2027.
Key dates
Worked out from the year end and filing history on the Companies House register.
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Financial snapshot, 2025
From the balance sheet at 30 September 2025, as filed at Companies House.
Where JDD Engineering Services Ltd is registered
The registered office is in Covent Garden (WC2H), in the Camden local authority area, London. Show WC2H 9JQ on a map.
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Shared registered office
4,529 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 JDD Engineering Services 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 30 June 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jul 2027 to 31 Jul 2027 | £150 |
| 1 to 3 months late | 1 Aug 2027 to 30 Sep 2027 | £375 |
| 3 to 6 months late | 1 Oct 2027 to 31 Dec 2027 | £750 |
| More than 6 months late | From 1 Jan 2028 | £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
- 15966289
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 19 September 2024 (2 years ago)
- Registered office
- 71-75 Shelton Street, Covent Garden, London, WC2H 9JQ
- Nature of business
- Construction of railways and underground railways (SIC 42120)
- Year end
- 30 September (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 30 September 2025
- Last confirmation statement
- 18 September 2026
- Previous names
- MDC Rail Services Ltd (until 29 Jun 2026)
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 Covent Garden
Other active civil engineering contractors registered in Covent Garden.
- Johnsons TM Ltd2025
- K Limited Ltd2026
- Kxtenergy Limited2026
- Leap Network Ltd2025
- Leigh Utility Services Ltd2026
- Limitless Fibre Installations Ltd2025
- London Emergency Electrics Ltd2023
- LQ Safety Services Ltd2025
All civil engineering contractors in Covent Garden · All trades in Covent Garden · Civil engineering across the UK
Frequently asked questions
When are JDD Engineering Services Ltd's accounts due?
JDD Engineering Services Ltd's next accounts are due at Companies House by 30 June 2027 (in 261 days), covering the period to 30 September 2026.
When is JDD Engineering Services Ltd's CT600 due?
The CT600 for the period to 30 September 2026 is due at HMRC by 30 September 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 July 2027.
Is JDD Engineering Services Ltd still trading?
JDD Engineering Services Ltd is listed as active on the Companies House register (checked 12 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 JDD Engineering Services Ltd do?
JDD Engineering Services Ltd is registered under Construction of railways and underground railways (SIC 42120).
How old is JDD Engineering Services Ltd?
JDD Engineering Services Ltd was incorporated on 19 September 2024, 2 years ago.
What is the penalty if JDD Engineering Services 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 JDD Engineering Services Ltd on Companies House for filed documents, officers and the full history.
Based on the Companies House register (snapshot 1 Oct 2026, rechecked 12 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.