- Companies
- Installers
- London
- Prime Line Insulation Limited
Prime Line Insulation Limited
- Company number
- 17347626
- Incorporated
- 19 Jul 2026
- Registered office
- 7 Fords Park Road, London, E16 1NP
- Nature of business
- Other construction installation
Prime Line Insulation Limited is a newly incorporated private limited company registered in London, company number 17347626, one of 2,278 installation companies (insulation, lifts, shutters and similar) in London. Its next accounts are due at Companies House on 19 April 2028, and its first CT600 is due at HMRC on 18 July 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 Prime Line Insulation Limited is registered
The registered office is in London (E16), in the Newham local authority area, London. Show E16 1NP on a map.
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What happens if Prime Line Insulation 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 19 April 2028.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 20 Apr 2028 to 19 May 2028 | £150 |
| 1 to 3 months late | 20 May 2028 to 19 Jul 2028 | £375 |
| 3 to 6 months late | 20 Jul 2028 to 19 Oct 2028 | £750 |
| More than 6 months late | From 20 Oct 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Aug 2028 | £200 |
| 3 months late | 31 Oct 2028 | another £200 |
| 6 months late | 31 Jan 2029 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Jul 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
- 17347626
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 19 July 2026
- Registered office
- 7 Fords Park Road, London, E16 1NP
- Nature of business
- Other construction installation (SIC 43290)
- Year end
- 31 July (accounting reference date)
- Accounts type
- No accounts filed yet
Filing notes for installation companies (insulation, lifts, shutters and similar)
Installation companies (insulation, lifts, shutters, solar and similar) often buy stock and equipment up front, so stock at the year end and capital allowances both affect the tax bill.
Similar companies in London
Other active installation companies (insulation, lifts, shutters and similar) registered in London.
- Prime Tech Traders Ltd2016
- Primebond Sealants Ltd2025
- Primeline Finishes Ltd2026
- Primus Flex Limited2012
- Pro 2 Construction Ltd2018
- Pro D Builders Ltd2022
- Pro Integration Ltd2026
- Pro Pure Management Group Limited2025
All installation companies (insulation, lifts, shutters and similar) in London · All trades in London · Installers across the UK
Frequently asked questions
When are Prime Line Insulation Limited's accounts due?
Prime Line Insulation Limited's next accounts are due at Companies House by 19 April 2028 (in 554 days), covering the period to 31 July 2027.
When is Prime Line Insulation 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 18 July 2027, due by 18 July 2028, and one for the period to 31 July 2027, due by 31 July 2028. Corporation tax is payable 9 months and 1 day after the end of each.
Is Prime Line Insulation Limited still trading?
Prime Line Insulation 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 Prime Line Insulation Limited do?
Prime Line Insulation Limited is registered under Other construction installation (SIC 43290).
How old is Prime Line Insulation Limited?
Prime Line Insulation Limited was incorporated on 19 July 2026, less than a year ago.
What is the penalty if Prime Line Insulation 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 Prime Line Insulation 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.