- Companies
- Property developers
- London
- Columbia Mills Developments Ltd
Columbia Mills Developments Ltd
- Company number
- 14182745
- Incorporated
- 20 Jun 20224 years trading
- Registered office
- Unit A3 Broomsleigh Business Park, Worsley Bridge Road, London, SE26 5BN
- Nature of business
- Development of building projects; Buying and selling of own real estate; Other letting and operating of own or leased real estate
Columbia Mills Developments Ltd is a 4-year-old private limited company registered in London, company number 14182745, one of 14,100 property development companies in London. Its next accounts are due at Companies House on 31 December 2026, and the CT600 for the period to 31 March 2026 is due at HMRC on 31 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 up £44K (+4.1%) on the year before, to £1.1M.
- Current assets of £458K against £266K owed within a year: 1.7 times cover.
- No employees reported for the latest year (directors are often not counted as employees).
- Balance sheets on record for 3 years, 2023 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Mar 2025 | £1.1M | £266K | £458K | £266K | 0 |
| 31 Mar 2024 | £1.1M | £198K | £555K | £408K | 0 |
| 31 Mar 2023 | £1M | £537K | £1.6M | £524K | 0 |
Where Columbia Mills Developments Ltd is registered
The registered office is in London (SE26), in the Lewisham local authority area, London. Show SE26 5BN on a map.
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Shared registered office
38 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 Columbia Mills Developments 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 December 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jan 2027 to 31 Jan 2027 | £150 |
| 1 to 3 months late | 1 Feb 2027 to 31 Mar 2027 | £375 |
| 3 to 6 months late | 1 Apr 2027 to 30 Jun 2027 | £750 |
| More than 6 months late | From 1 Jul 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Apr 2027 | £200 |
| 3 months late | 30 Jun 2027 | another £200 |
| 6 months late | 30 Sep 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 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
- 14182745
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 20 June 2022 (4 years ago)
- Registered office
- Unit A3 Broomsleigh Business Park, Worsley Bridge Road, London, SE26 5BN
- Nature of business
- Development of building projects (SIC 41100)
Buying and selling of own real estate (SIC 68100)
Other letting and operating of own or leased real estate (SIC 68209) - Year end
- 31 March (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 March 2025
- Last confirmation statement
- 15 October 2025
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.
- Columbia Rentals Limited1994
- Columbia Road Limited2022
- Colyer Developments Limited1997
- Com Mon I Limited2019
- Comarq. Capital Limited2025
- Comast Projects Ltd2014
- Comax Estates Limited1995
- Come Back Limited2025
All property development companies in London · All trades in London · Property developers across the UK
Frequently asked questions
When are Columbia Mills Developments Ltd's accounts due?
Columbia Mills Developments Ltd's next accounts are due at Companies House by 31 December 2026 (in 80 days), covering the period to 31 March 2026.
When is Columbia Mills Developments Ltd's CT600 due?
The CT600 for the period to 31 March 2026 is due at HMRC by 31 March 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 January 2027.
Is Columbia Mills Developments Ltd still trading?
Columbia Mills Developments 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 Columbia Mills Developments Ltd do?
Columbia Mills Developments Ltd is registered under Development of building projects (SIC 41100); Buying and selling of own real estate (SIC 68100); Other letting and operating of own or leased real estate (SIC 68209).
How old is Columbia Mills Developments Ltd?
Columbia Mills Developments Ltd was incorporated on 20 June 2022, 4 years ago.
What is the penalty if Columbia Mills Developments 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 Columbia Mills Developments 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.