- Companies
- Property developers
- London
- Castlefield (No 1) Limited
Castlefield (No 1) Limited
- Company number
- 15341740
- Incorporated
- 11 Dec 20232 years trading
- Registered office
- Second Floor, Sutherland House, 70-78 West Hendon Broadway, London, NW9 7BT
- Nature of business
- Development of building projects
Castlefield (No 1) Limited is a 2-year-old private limited company registered in London, company number 15341740, one of 14,100 property development companies in London. Its next accounts are due at Companies House on 27 November 2026, and the CT600 for the period to 27 February 2026 is due at HMRC on 27 February 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 28 February 2025, as filed at Companies House.
Where Castlefield (No 1) Limited is registered
The registered office is in London (NW9), in the Barnet local authority area, London. Show NW9 7BT on a map.
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Also registered at this address
3 other companies use the same registered office as Castlefield (No 1) Limited.
- Gemsbuilds Construction LtdProperty developers
- High Construct LimitedBuilders
- Zed Services London LtdCleaning companies
What happens if Castlefield (No 1) Limited 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 27 November 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 28 Nov 2026 to 27 Dec 2026 | £150 |
| 1 to 3 months late | 28 Dec 2026 to 27 Feb 2027 | £375 |
| 3 to 6 months late | 28 Feb 2027 to 27 May 2027 | £750 |
| More than 6 months late | From 28 May 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 28 Feb 2027 | £200 |
| 3 months late | 27 May 2027 | another £200 |
| 6 months late | 27 Aug 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 27 Feb 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
- 15341740
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 11 December 2023 (2 years ago)
- Registered office
- Second Floor, Sutherland House, 70-78 West Hendon Broadway, London, NW9 7BT
- Nature of business
- Development of building projects (SIC 41100)
- Year end
- 27 February (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 28 February 2025
- Last confirmation statement
- 10 December 2025
- 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.
- Castlegate 772 Limited2018
- Castlegate Building and Maintenance Ltd2025
- Castlehaven Property Investments Limited1962
- Castlelink Properties Limited1996
- Castlemane Limited2021
- Castlereigh Limited2021
- Castleton Builders Ltd2020
- Castletown Real Estate Consultants. Property Management Enterprises. Training Educational Providers. + Limited2025
All property development companies in London · All trades in London · Property developers across the UK
Frequently asked questions
When are Castlefield (No 1) Limited's accounts due?
Castlefield (No 1) Limited's next accounts are due at Companies House by 27 November 2026 (in 45 days), covering the period to 27 February 2026.
When is Castlefield (No 1) Limited's CT600 due?
The CT600 for the period to 27 February 2026 is due at HMRC by 27 February 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 28 November 2026.
Is Castlefield (No 1) Limited still trading?
Castlefield (No 1) Limited 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 Castlefield (No 1) Limited do?
Castlefield (No 1) Limited is registered under Development of building projects (SIC 41100).
How old is Castlefield (No 1) Limited?
Castlefield (No 1) Limited was incorporated on 11 December 2023, 2 years ago.
What is the penalty if Castlefield (No 1) 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 Castlefield (No 1) Limited 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.