- Companies
- Property developers
- London
- Spark T1 Ltd
Spark T1 Ltd
- Company number
- 17481910
- Incorporated
- 25 Sep 2026
- Registered office
- 68 Great Portland Street, 4TH Floor, London, W1W 7NG
- Nature of business
- Development of building projects
Spark T1 Ltd is a newly incorporated private limited company registered in London, company number 17481910, one of 14,100 property development companies in London. Its next accounts are due at Companies House on 25 June 2028, and its first CT600 is due at HMRC on 24 September 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 Spark T1 Ltd is registered
The registered office is in London (W1W), in the Westminster local authority area, London. Show W1W 7NG on a map.
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Also registered at this address
1 other company uses the same registered office as Spark T1 Ltd.
- Spark Data Centre Technologies LtdProperty developers
What happens if Spark T1 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 25 June 2028.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 26 Jun 2028 to 25 Jul 2028 | £150 |
| 1 to 3 months late | 26 Jul 2028 to 25 Sep 2028 | £375 |
| 3 to 6 months late | 26 Sep 2028 to 25 Dec 2028 | £750 |
| More than 6 months late | From 26 Dec 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Oct 2028 | £200 |
| 3 months late | 30 Dec 2028 | another £200 |
| 6 months late | 30 Mar 2029 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Sep 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
- 17481910
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 25 September 2026
- Registered office
- 68 Great Portland Street, 4TH Floor, London, W1W 7NG
- Nature of business
- Development of building projects (SIC 41100)
- Year end
- 30 September (accounting reference date)
- Accounts type
- No accounts filed yet
Filing notes for property development companies
Many property development companies are single-project vehicles. Stock of land and buildings sits on the balance sheet as work in progress until sale, and a company that has finished its project may become dormant rather than close.
Similar companies in London
Other active property development companies registered in London.
- Sparkeast Commercial Ltd2019
- Sparkhill Limited2016
- Sparking Ventures Limited2015
- Sparkle Homes Limited2025
- Sparklewise Limited2018
- Sparkwell Investments Limited2004
- Sparkwell Properties Limited1995
- Sparrow Developments Limited2005
All property development companies in London · All trades in London · Property developers across the UK
Frequently asked questions
When are Spark T1 Ltd's accounts due?
Spark T1 Ltd's next accounts are due at Companies House by 25 June 2028 (in 621 days), covering the period to 30 September 2027.
When is Spark T1 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 24 September 2027, due by 24 September 2028, and one for the period to 30 September 2027, due by 30 September 2028. Corporation tax is payable 9 months and 1 day after the end of each.
Is Spark T1 Ltd still trading?
Spark T1 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 Spark T1 Ltd do?
Spark T1 Ltd is registered under Development of building projects (SIC 41100).
How old is Spark T1 Ltd?
Spark T1 Ltd was incorporated on 25 September 2026, less than a year ago.
What is the penalty if Spark T1 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 Spark T1 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.