- Companies
- Civil engineering
- London
- Prime Line Ltd
Prime Line Ltd
- Company number
- 14842134
- Incorporated
- 3 May 20233 years trading
- Registered office
- 34 Aldbourne Road, Shepherd's Bush, London, W12 0LN
- Nature of business
- Construction of railways and underground railways
Prime Line Ltd is a 3-year-old private limited company registered in London, company number 14842134, one of 1,853 civil engineering contractors in London. Its next accounts are due at Companies House on 28 February 2027, and the CT600 for the period to 31 May 2026 is due at HMRC on 31 May 2027.
Key dates
Worked out from the year end and filing history on the Companies House register.
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Finances
From each year's balance sheet filed at Companies House. Small companies do not have to publish turnover or profit, so these are balance sheet figures.
- Net assets up £1,921 (+39.1%) on the year before, to £6,838.
- Current assets of £6,530 against £421 owed within a year: more than 10 times cover.
- 1 employee on average during the year.
- Balance sheets on record for 2 years, 2024 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 May 2025 | £6,838 | £6,530 | £421 | 1 | |
| 31 May 2024 | £4,917 | £6,186 | £1,269 | 1 |
Where Prime Line Ltd is registered
The registered office is in London (W12), in the Hammersmith and Fulham local authority area, London. Show W12 0LN on a map.
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What happens if Prime Line 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 28 February 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Mar 2027 to 31 Mar 2027 | £150 |
| 1 to 3 months late | 1 Apr 2027 to 31 May 2027 | £375 |
| 3 to 6 months late | 1 Jun 2027 to 31 Aug 2027 | £750 |
| More than 6 months late | From 1 Sep 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jun 2027 | £200 |
| 3 months late | 31 Aug 2027 | another £200 |
| 6 months late | 30 Nov 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 May 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
- 14842134
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 3 May 2023 (3 years ago)
- Registered office
- 34 Aldbourne Road, Shepherd's Bush, London, W12 0LN
- Nature of business
- Construction of railways and underground railways (SIC 42120)
- Year end
- 31 May (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 May 2025
- Last confirmation statement
- 2 May 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 London
Other active civil engineering contractors registered in London.
- Prime Projects (South Eastern) Limited2016
- Priviledge Gateway Ltd2020
- Pro Build Building M & S Ltd2018
- Pro Lay Innovation Ltd2026
- Pro Project Support Ltd2023
- Pro Shield Drainage Ltd2026
- Pro to Properties UK Ltd2025
- Pro-Struct Engineering Ltd2020
All civil engineering contractors in London · All trades in London · Civil engineering across the UK
Frequently asked questions
When are Prime Line Ltd's accounts due?
Prime Line Ltd's next accounts are due at Companies House by 28 February 2027 (in 138 days), covering the period to 31 May 2026.
When is Prime Line Ltd's CT600 due?
The CT600 for the period to 31 May 2026 is due at HMRC by 31 May 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 March 2027.
Is Prime Line Ltd still trading?
Prime Line 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 Prime Line Ltd do?
Prime Line Ltd is registered under Construction of railways and underground railways (SIC 42120).
How old is Prime Line Ltd?
Prime Line Ltd was incorporated on 3 May 2023, 3 years ago.
What is the penalty if Prime Line 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 Prime Line 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.