- Company number
- 17154753
- Incorporated
- 13 Apr 2026
- Registered office
- 330 Kilburn High Road, London, NW6 2QN
- Nature of business
- Construction of domestic buildings; Electrical installation; Plumbing, heat and air-conditioning installation
Sparkbuilt Ltd is a newly incorporated private limited company registered in London, company number 17154753, one of 12,075 building contractors in London. Its next accounts are due at Companies House on 13 January 2028, and its first CT600 is due at HMRC on 12 April 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 Sparkbuilt Ltd is registered
The registered office is in London (NW6), in the Camden local authority area, London. Show NW6 2QN on a map.
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What happens if Sparkbuilt 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 13 January 2028.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 14 Jan 2028 to 13 Feb 2028 | £150 |
| 1 to 3 months late | 14 Feb 2028 to 13 Apr 2028 | £375 |
| 3 to 6 months late | 14 Apr 2028 to 13 Jul 2028 | £750 |
| More than 6 months late | From 14 Jul 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 May 2028 | £200 |
| 3 months late | 30 Jul 2028 | another £200 |
| 6 months late | 30 Oct 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Apr 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
- 17154753
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 13 April 2026
- Registered office
- 330 Kilburn High Road, London, NW6 2QN
- Nature of business
- Construction of domestic buildings (SIC 41202)
Electrical installation (SIC 43210)
Plumbing, heat and air-conditioning installation (SIC 43220) - Year end
- 30 April (accounting reference date)
- Accounts type
- No accounts filed yet
Filing notes for building contractors
Building companies often run the Construction Industry Scheme as a contractor, a subcontractor or both. CIS deductions suffered during the year are set against the PAYE bill, and any unrecovered balance at the year end matters when the accounts are drawn up.
Similar companies in London
Other active building contractors registered in London.
- Sparks Way Ltd2022
- Sparkyme Ltd2026
- Sparky’N’Screws Ltd2025
- Spartan's Groundworks Ltd2020
- Spas&Ivan Interiors Limited2012
- Spas57 Ltd2022
- Spasov Brothers Ltd2021
- Spatsa S Construction UK Ltd2025
All building contractors in London · All trades in London · Builders across the UK
Frequently asked questions
When are Sparkbuilt Ltd's accounts due?
Sparkbuilt Ltd's next accounts are due at Companies House by 13 January 2028 (in 458 days), covering the period to 30 April 2027.
When is Sparkbuilt 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 12 April 2027, due by 12 April 2028, and one for the period to 30 April 2027, due by 30 April 2028. Corporation tax is payable 9 months and 1 day after the end of each.
Is Sparkbuilt Ltd still trading?
Sparkbuilt 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 Sparkbuilt Ltd do?
Sparkbuilt Ltd is registered under Construction of domestic buildings (SIC 41202); Electrical installation (SIC 43210); Plumbing, heat and air-conditioning installation (SIC 43220).
How old is Sparkbuilt Ltd?
Sparkbuilt Ltd was incorporated on 13 April 2026, less than a year ago.
What is the penalty if Sparkbuilt 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 Sparkbuilt 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.