- Companies
- Installers
- London
- Tsilo Ltd
Tsilo Ltd
- Company number
- 15804655
- Incorporated
- 26 Jun 20242 years trading
- Registered office
- First Floor Office, 3 Hornton Place, London, W8 4LZ
- Nature of business
- Other construction installation; Joinery installation; Other building completion and finishing; Other specialised construction activities n.e.c.
Tsilo Ltd is a 2-year-old private limited company registered in London, company number 15804655, one of 2,278 installation companies (insulation, lifts, shutters and similar) in London. Its next accounts are due at Companies House on 31 March 2027, and the CT600 for the period to 30 June 2026 is due at HMRC on 30 June 2027.
Key dates
Worked out from the year end and filing history on the Companies House register.
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Financial snapshot, 2025
From the balance sheet at 30 June 2025, as filed at Companies House.
Where Tsilo Ltd is registered
The registered office is in London (W8), in the Kensington and Chelsea local authority area, London. Show W8 4LZ on a map.
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- Heaven Builders LimitedProperty developers
Shared registered office
63 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 Tsilo 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 31 March 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Apr 2027 to 30 Apr 2027 | £150 |
| 1 to 3 months late | 1 May 2027 to 30 Jun 2027 | £375 |
| 3 to 6 months late | 1 Jul 2027 to 30 Sep 2027 | £750 |
| More than 6 months late | From 1 Oct 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jul 2027 | £200 |
| 3 months late | 30 Sep 2027 | another £200 |
| 6 months late | 30 Dec 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Jun 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
- 15804655
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 26 June 2024 (2 years ago)
- Registered office
- First Floor Office, 3 Hornton Place, London, W8 4LZ
- Nature of business
- Other construction installation (SIC 43290)
Joinery installation (SIC 43320)
Other building completion and finishing (SIC 43390)
Other specialised construction activities n.e.c. (SIC 43999) - Year end
- 30 June (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 30 June 2025
- Last confirmation statement
- 25 June 2026
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.
- TSL Maintenance Limited2018
- Tucano Group Ltd2025
- Tuskshield Ltd2026
- Tvaran Services Ltd2026
- TVM Construction Ltd2022
- Tweak Solutions Ltd2025
- Twoform Limited2005
- Twsa Group Limited2013
All installation companies (insulation, lifts, shutters and similar) in London · All trades in London · Installers across the UK
Frequently asked questions
When are Tsilo Ltd's accounts due?
Tsilo Ltd's next accounts are due at Companies House by 31 March 2027 (in 169 days), covering the period to 30 June 2026.
When is Tsilo Ltd's CT600 due?
The CT600 for the period to 30 June 2026 is due at HMRC by 30 June 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 April 2027.
Is Tsilo Ltd still trading?
Tsilo 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 Tsilo Ltd do?
Tsilo Ltd is registered under Other construction installation (SIC 43290); Joinery installation (SIC 43320); Other building completion and finishing (SIC 43390); Other specialised construction activities n.e.c. (SIC 43999).
How old is Tsilo Ltd?
Tsilo Ltd was incorporated on 26 June 2024, 2 years ago.
What is the penalty if Tsilo 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 Tsilo 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.