- Companies
- Civil engineering
- London
- Boost Solar Group Ltd
Boost Solar Group Ltd
- Company number
- 17333032
- Incorporated
- 10 Jul 2026
- Registered office
- 124 City Road, London, EC1V 2NX
- Nature of business
- Construction of utility projects for electricity and telecommunications; Electrical installation; Wholesale of other machinery and equipment; Other engineering activities
Boost Solar Group Ltd is a newly incorporated private limited company registered in London, company number 17333032, one of 1,853 civil engineering contractors in London. Its next accounts are due at Companies House on 10 April 2028, and its first CT600 is due at HMRC on 9 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.
Is this your company?
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Where Boost Solar Group Ltd is registered
The registered office is in London (EC1V), in the Islington local authority area, London. Show EC1V 2NX on a map.
Other trade companies in EC1V
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- J&R Partners LtdBuilders
- The Tile Craft LtdFinishing trades
- Cathal Od Solutions LtdSpecialist contractors
Shared registered office
1,047 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 Boost Solar Group 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 10 April 2028.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 11 Apr 2028 to 10 May 2028 | £150 |
| 1 to 3 months late | 11 May 2028 to 10 Jul 2028 | £375 |
| 3 to 6 months late | 11 Jul 2028 to 10 Oct 2028 | £750 |
| More than 6 months late | From 11 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
- 17333032
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 10 July 2026
- Registered office
- 124 City Road, London, EC1V 2NX
- Nature of business
- Construction of utility projects for electricity and telecommunications (SIC 42220)
Electrical installation (SIC 43210)
Wholesale of other machinery and equipment (SIC 46690)
Other engineering activities (SIC 71129) - Year end
- 31 July (accounting reference date)
- Accounts type
- No accounts filed yet
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.
- Bosslemzy Ltd2025
- Boucon Ltd2019
- Bourke Contracting Ltd2025
- BR Structures Ltd2024
- Brandon Rail Limited2025
- Brazfix Constructions Ltd2024
- Brew's Practice Ltd2023
- Brian Stynes Engineering Ltd2020
All civil engineering contractors in London · All trades in London · Civil engineering across the UK
Frequently asked questions
When are Boost Solar Group Ltd's accounts due?
Boost Solar Group Ltd's next accounts are due at Companies House by 10 April 2028 (in 545 days), covering the period to 31 July 2027.
When is Boost Solar Group 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 9 July 2027, due by 9 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 Boost Solar Group Ltd still trading?
Boost Solar Group 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 Boost Solar Group Ltd do?
Boost Solar Group Ltd is registered under Construction of utility projects for electricity and telecommunications (SIC 42220); Electrical installation (SIC 43210); Wholesale of other machinery and equipment (SIC 46690); Other engineering activities (SIC 71129).
How old is Boost Solar Group Ltd?
Boost Solar Group Ltd was incorporated on 10 July 2026, less than a year ago.
What is the penalty if Boost Solar Group 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 Boost Solar Group 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.