- Companies
- Property developers
- London
- Clyro Castle Trading Company Limited
Clyro Castle Trading Company Limited
- Company number
- 09285358
- Incorporated
- 29 Oct 201411 years trading
- Registered office
- Calder & Co, 16 Charles Ii Street, London, SW1Y 4NW
- Nature of business
- Development of building projects
Clyro Castle Trading Company Limited is a 11-year-old private limited company registered in London, company number 09285358, one of 14,100 property development companies in London. Companies House shows its accounts as overdue: they were due on 31 December 2018.
Key dates
Worked out from the year end and filing history on the Companies House register.
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Where Clyro Castle Trading Company Limited is registered
The registered office is in London (SW1Y), in the Westminster local authority area, London. Show SW1Y 4NW on a map.
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What happens if Clyro Castle Trading Company Limited files late
If the accounts reach Companies House today, the late filing penalty is £1,500 (£3,000 if last year's accounts were also late). It rises at each step below.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jan 2019 to 31 Jan 2019 | £150 |
| 1 to 3 months late | 1 Feb 2019 to 31 Mar 2019 | £375 |
| 3 to 6 months late | 1 Apr 2019 to 30 Jun 2019 | £750 |
| More than 6 months late | From 1 Jul 2019 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Apr 2019 | £200 |
| 3 months late | 30 Jun 2019 | another £200 |
| 6 months late | 30 Sep 2019 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Mar 2020 | 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
- 09285358
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 29 October 2014 (11 years ago)
- Registered office
- Calder & Co, 16 Charles Ii Street, London, SW1Y 4NW
- Nature of business
- Development of building projects (SIC 41100)
- Year end
- 31 March (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 March 2017
- Last confirmation statement
- 17 October 2016
- Charges (mortgages)
- 1 outstanding of 1 registered
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.
- Clytie Limited2009
- CM Abbots Park Limited2022
- CM Azalea Limited2022
- CM Building Construction (UK) Ltd2013
- CM Burgess Limited2022
- CM Civils Ltd2017
- CM Constructors Limited2025
- CM Highmead Limited2022
All property development companies in London · All trades in London · Property developers across the UK
Frequently asked questions
When are Clyro Castle Trading Company Limited's accounts due?
Clyro Castle Trading Company Limited's accounts were due at Companies House on 31 December 2018 and the register shows them as overdue.
When is Clyro Castle Trading Company Limited's CT600 due?
The CT600 for the period to 31 March 2018 is due at HMRC by 31 March 2019, 12 months after the period end. The corporation tax itself is payable earlier, by 1 January 2019.
Is Clyro Castle Trading Company Limited still trading?
Clyro Castle Trading Company Limited is listed as active on the Companies House register (checked 13 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 Clyro Castle Trading Company Limited do?
Clyro Castle Trading Company Limited is registered under Development of building projects (SIC 41100).
How old is Clyro Castle Trading Company Limited?
Clyro Castle Trading Company Limited was incorporated on 29 October 2014, 11 years ago.
What is the penalty if Clyro Castle Trading Company 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 Clyro Castle Trading Company Limited on Companies House for filed documents, officers and the full history.
Based on the Companies House register (snapshot 1 Oct 2026, rechecked 13 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.