- Companies
- Property developers
- Harrow
- Castlemist Finances Limited
Castlemist Finances Limited
- Company number
- 03433821
- Incorporated
- 15 Sep 199729 years trading
- Registered office
- 8 Pinner View, Harrow, Middlesex, HA1 4QA
- Nature of business
- Development of building projects; Security dealing on own account; Buying and selling of own real estate; Other service activities n.e.c.
Castlemist Finances Limited is a 29-year-old private limited company registered in Harrow, company number 03433821, one of 679 property development companies in Harrow. Its next accounts are due at Companies House on 14 December 2026, and the CT600 for the period to 14 March 2026 is due at HMRC on 14 March 2027.
Key dates
Worked out from the year end and filing history on the Companies House register.
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Finances
From each year's balance sheet filed at Companies House. Small companies do not have to publish turnover or profit, so these are balance sheet figures.
- Net assets down £89K (-4.1%) on the year before, to £2.1M.
- Net assets rose in 6 of 9 year-on-year comparisons on record.
- Current assets of £584K against £11K owed within a year: more than 10 times cover.
- No employees reported for the latest year (directors are often not counted as employees).
- Balance sheets on record for 10 years, 2016 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 14 Mar 2025 | £2.1M | £141K | £584K | £11K | 0 |
| 14 Mar 2024 | £2.2M | £126K | £569K | £11K | 0 |
| 14 Mar 2023 | £2.2M | £173K | £617K | £57K | 0 |
| 14 Mar 2022 | £2.1M | £218K | £1.2M | £642K | 0 |
| 14 Mar 2021 | £2M | £83K | £1.7M | £1.2M | 0 |
| 14 Mar 2020 | £1.8M | £247K | £2.5M | £1.1M | 0 |
| 14 Mar 2019 | £2M | £148K | £1.9M | £1.3M | |
| 14 Mar 2018 | £2M | £37K | £1.3M | £888K | |
| 14 Mar 2017 | £1.9M | £24K | £1.2M | £858K | |
| 14 Mar 2016 | £1.9M | £36K | £1.5M | £1.6M |
Where Castlemist Finances Limited is registered
The registered office is in Harrow (HA1), in the Harrow local authority area, London. Show HA1 4QA on a map.
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Also registered at this address
17 other companies use the same registered office as Castlemist Finances Limited.
- Agd Design & Build LtdBuilders
- Aspire Homes London LimitedBuilders
- Changing Gardens LimitedLandscapers and gardeners
- Crimson Construction LtdSpecialist contractors
- Eclipse Installation LimitedMachinery repair and installation
- Emporium Design LtdProperty developers
- Falcon Abseiling LtdFinishing trades
- GN Scaffolding LimitedScaffolders
- H&B Buildings Services LimitedBuilders
- Just Easy Bathing LtdInstallers
- Kadey LimitedFinishing trades
- Maitland Projects LimitedFinishing trades
- Power of Pressure LtdCleaning companies
- Puni Solutions LimitedSpecialist contractors
- RSD Cars LimitedMotor traders
- Shree Hari Jewellers LimitedMotor traders
- Webb Mechanical LtdInstallers
What happens if Castlemist Finances 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 14 December 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 15 Dec 2026 to 14 Jan 2027 | £150 |
| 1 to 3 months late | 15 Jan 2027 to 14 Mar 2027 | £375 |
| 3 to 6 months late | 15 Mar 2027 to 14 Jun 2027 | £750 |
| More than 6 months late | From 15 Jun 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 15 Mar 2027 | £200 |
| 3 months late | 14 Jun 2027 | another £200 |
| 6 months late | 14 Sep 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 14 Mar 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
- 03433821
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 15 September 1997 (29 years ago)
- Registered office
- 8 Pinner View, Harrow, Middlesex, HA1 4QA
- Nature of business
- Development of building projects (SIC 41100)
Security dealing on own account (SIC 64991)
Buying and selling of own real estate (SIC 68100)
Other service activities n.e.c. (SIC 96090) - Year end
- 14 March (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 14 March 2025
- Last confirmation statement
- 3 November 2025
- Charges (mortgages)
- 4 outstanding of 5 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 Harrow
Other active property development companies registered in Harrow.
- Castlepines Limited2018
- CDWL Subsidiary Limited2023
- Ceemaf Constructions Ltd2022
- Chandlers (GB) Limited2013
- Channa Developments Limited2025
- Chase Properties (UK) Limited2006
- Chelmer Road Limited2026
- Chess Architecture & Development Limited2001
All property development companies in Harrow · All trades in Harrow · Property developers across the UK
Frequently asked questions
When are Castlemist Finances Limited's accounts due?
Castlemist Finances Limited's next accounts are due at Companies House by 14 December 2026 (in 62 days), covering the period to 14 March 2026.
When is Castlemist Finances Limited's CT600 due?
The CT600 for the period to 14 March 2026 is due at HMRC by 14 March 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 15 December 2026.
Is Castlemist Finances Limited still trading?
Castlemist Finances 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 Castlemist Finances Limited do?
Castlemist Finances Limited is registered under Development of building projects (SIC 41100); Security dealing on own account (SIC 64991); Buying and selling of own real estate (SIC 68100); Other service activities n.e.c. (SIC 96090).
How old is Castlemist Finances Limited?
Castlemist Finances Limited was incorporated on 15 September 1997, 29 years ago.
What is the penalty if Castlemist Finances 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 Castlemist Finances 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.