- Companies
- Civil engineering
- Sidcup
- Collins Groundworks Services Limited
Collins Groundworks Services Limited
- Company number
- 16246425
- Incorporated
- 12 Feb 20251 year trading
- Registered office
- 12 Hatherley Road, Sidcup, DA14 4DT
- Nature of business
- Construction of railways and underground railways
Collins Groundworks Services Limited is a 1-year-old private limited company registered in Sidcup, company number 16246425, one of 63 civil engineering contractors in Sidcup. Its next accounts are due at Companies House on 12 November 2026, and its first CT600 is due at HMRC on 11 February 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 Collins Groundworks Services Limited is registered
The registered office is in Sidcup (DA14), in the Bexley local authority area, London. Show DA14 4DT on a map.
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Shared registered office
427 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 Collins Groundworks Services 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 12 November 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 13 Nov 2026 to 12 Dec 2026 | £150 |
| 1 to 3 months late | 13 Dec 2026 to 12 Feb 2027 | £375 |
| 3 to 6 months late | 13 Feb 2027 to 12 May 2027 | £750 |
| More than 6 months late | From 13 May 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 May 2027 | £200 |
| 3 months late | 30 Jul 2027 | another £200 |
| 6 months late | 30 Oct 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Apr 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
- 16246425
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 12 February 2025 (1 year ago)
- Registered office
- 12 Hatherley Road, Sidcup, DA14 4DT
- Nature of business
- Construction of railways and underground railways (SIC 42120)
- Year end
- 30 April (accounting reference date)
- Accounts type
- No accounts filed yet
- Last confirmation statement
- 10 November 2025
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 Sidcup
Other active civil engineering contractors registered in Sidcup.
- Collins Rail Services Limited2016
- CTM PM Limited2017
- Danaher Rail Management Ltd2021
- DC Rosa Limited2015
- DMD Work Surfaces Limited2014
- Dsconstruct Limited2018
- Elevator Engineering Enterprises Limited2013
- FJ & A Limited2015
All civil engineering contractors in Sidcup · All trades in Sidcup · Civil engineering across the UK
Frequently asked questions
When are Collins Groundworks Services Limited's accounts due?
Collins Groundworks Services Limited's next accounts are due at Companies House by 12 November 2026 (in 30 days), covering the period to 30 April 2026.
When is Collins Groundworks Services 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 11 February 2026, due by 11 February 2027, and one for the period to 30 April 2026, due by 30 April 2027. Corporation tax is payable 9 months and 1 day after the end of each.
Is Collins Groundworks Services Limited still trading?
Collins Groundworks Services 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 Collins Groundworks Services Limited do?
Collins Groundworks Services Limited is registered under Construction of railways and underground railways (SIC 42120).
How old is Collins Groundworks Services Limited?
Collins Groundworks Services Limited was incorporated on 12 February 2025, 1 year ago.
What is the penalty if Collins Groundworks Services 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 Collins Groundworks Services 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.