- Companies
- Civil engineering
- Romford
- Union UK Builders Ltd
Union UK Builders Ltd
- Company number
- 15793907
- Incorporated
- 21 Jun 20242 years trading
- Registered office
- 67 Flat3,Seddon Court Brooklands Road, Romford, RM7 7EB
- Nature of business
- Construction of bridges and tunnels; Construction of utility projects for fluids
Union UK Builders Ltd is a 2-year-old private limited company registered in Romford, company number 15793907, one of 109 civil engineering contractors in Romford. Companies House shows its accounts as overdue: they were due on 21 March 2026.
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.
Is this your company?
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Where Union UK Builders Ltd is registered
The registered office is in Romford (RM7), in the Havering local authority area, London. Show RM7 7EB on a map.
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What happens if Union UK Builders Ltd files late
If the accounts reach Companies House today, the late filing penalty is £1,500 (£3,000 if last year's accounts were also late). It rises at each step below.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 22 Mar 2026 to 21 Apr 2026 | £150 |
| 1 to 3 months late | 22 Apr 2026 to 21 Jun 2026 | £375 |
| 3 to 6 months late | 22 Jun 2026 to 21 Sep 2026 | £750 |
| More than 6 months late | From 22 Sep 2026 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jul 2026 | £200 |
| 3 months late | 30 Sep 2026 | another £200 |
| 6 months late | 30 Dec 2026 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Jun 2027 | 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
- 15793907
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 21 June 2024 (2 years ago)
- Registered office
- 67 Flat3,Seddon Court Brooklands Road, Romford, RM7 7EB
- Nature of business
- Construction of bridges and tunnels (SIC 42130)
Construction of utility projects for fluids (SIC 42210) - Year end
- 30 June (accounting reference date)
- Accounts type
- No accounts filed yet
- Last confirmation statement
- 16 March 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 Romford
Other active civil engineering contractors registered in Romford.
- Valpeters Ltd2021
- VNK Rail Ltd2023
- Wainwright Engineering Limited2007
- Zema Works Ltd2025
- Accurate Welding & Engineering Limited2004
- Adams Construction and Development Limited2023
- Aj Cabling Civils Ltd2023
- Akz & Co Ltd2011
All civil engineering contractors in Romford · All trades in Romford · Civil engineering across the UK
Frequently asked questions
When are Union UK Builders Ltd's accounts due?
Union UK Builders Ltd's accounts were due at Companies House on 21 March 2026 and the register shows them as overdue.
When is Union UK Builders 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 20 June 2025, due by 20 June 2026, and one for the period to 30 June 2025, due by 30 June 2026. Corporation tax is payable 9 months and 1 day after the end of each.
Is Union UK Builders Ltd still trading?
Union UK Builders Ltd is listed as active on the Companies House register (checked 13 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 Union UK Builders Ltd do?
Union UK Builders Ltd is registered under Construction of bridges and tunnels (SIC 42130); Construction of utility projects for fluids (SIC 42210).
How old is Union UK Builders Ltd?
Union UK Builders Ltd was incorporated on 21 June 2024, 2 years ago.
What is the penalty if Union UK Builders 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 Union UK Builders Ltd on Companies House for filed documents, officers and the full history.
Based on the Companies House register (snapshot 1 Oct 2026, rechecked 13 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.