- Companies
- Property developers
- London
- Sidney Bolsom Investment Trust Limited
Sidney Bolsom Investment Trust Limited
- Company number
- 00287907
- Incorporated
- 9 May 193492 years trading
- Registered office
- 14 Bonhill Street, London, EC2A 4DJ
- Nature of business
- Development of building projects
Sidney Bolsom Investment Trust Limited is a 92-year-old private limited company registered in London, company number 00287907, 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 down £40K (-0.9%) on the year before, to £4.6M.
- Net assets rose in 2 of 4 year-on-year comparisons on record.
- Current assets of £409K against £291K owed within a year: 1.4 times cover.
- 2 employees on average during the year.
- Balance sheets on record for 5 years, 2021 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Mar 2025 | £4.6M | £1,001 | £409K | £291K | 2 |
| 31 Mar 2024 | £4.6M | £984 | £418K | £240K | 2 |
| 31 Mar 2023 | £4.9M | £4,767 | £386K | £206K | 2 |
| 31 Mar 2022 | £4.9M | £40K | £388K | £173K | 2 |
| 31 Mar 2021 | £4.9M | £23K | £374K | £195K | 2 |
Who runs and owns Sidney Bolsom Investment Trust Limited
From the Companies House register. Individuals are shown by initials only; the full register is on Companies House.
Officers (3)
| Name | Role | Appointed |
|---|---|---|
| S*** B*** | Director | before Mar 1991 |
| S*** B*** | Director | before Mar 1991 |
| S*** I*** | Director | before Mar 1991 |
9 former officers
| Name | Role | Appointed | Left |
|---|---|---|---|
| J*** I*** | Secretary | Dec 2007 | Dec 2011 |
| D*** L*** | Secretary | Dec 1997 | Dec 2007 |
| D*** L*** | Secretary | Jun 1997 | |
| N*** L*** | Secretary | Jun 1997 | Dec 1997 |
| J*** I*** | Director | Jun 2014 | |
| D*** L*** | Director | Apr 1999 | Dec 2007 |
| D*** L*** | Director | Oct 1992 | |
| N*** L*** | Director | Dec 2004 | Jul 2020 |
| N*** L*** | Director | Oct 1992 |
Person with significant control
Charges (secured borrowing)
4 of 21 registered charges are outstanding. A charge is security a lender takes over a company's assets, typically for a loan, mortgage or asset finance.
| Lender | Status | Registered |
|---|---|---|
| A private lender | Outstanding | Mar 2012 |
| A private lender | Outstanding | Mar 2012 |
| Northern Rock PLC | Outstanding | Sep 2006 |
| Barclays Bank PLC | Outstanding | Apr 1996 |
| Northern Rock PLC | Satisfied Aug 2012 | Sep 2006 |
| Northern Rock PLC | Satisfied Jul 2012 | Sep 2006 |
| Northern Rock PLC | Satisfied Aug 2012 | Sep 1999 |
| Northern Rock PLC | Satisfied Aug 2012 | Sep 1999 |
| Northern Rock PLC | Satisfied Aug 2012 | Sep 1999 |
| Northern Rock PLC | Satisfied Aug 2012 | Sep 1999 |
| Northern Rock PLC | Satisfied Jul 2012 | Sep 1999 |
| Northern Rock PLC | Satisfied Aug 2012 | Sep 1999 |
| Northern Rock PLC | Satisfied Aug 2012 | Sep 1999 |
| Barclays Bank PLC | Satisfied Sep 1999 | Sep 1997 |
| Barclays Bank PLC | Satisfied Sep 1999 | Apr 1995 |
| Barclays Bank PLC | Satisfied Sep 1999 | Apr 1995 |
| Barclays Bank PLC | Satisfied Sep 1999 | Apr 1995 |
| Barclays Bank PLC | Satisfied Sep 1999 | Apr 1994 |
| Barclays Bank PLC | Satisfied Sep 1999 | Jan 1994 |
| Barclays Bank PLC | Satisfied Sep 1999 | Aug 1990 |
| Barclays Bank PLC | Satisfied Sep 1999 | Mar 1990 |
Where Sidney Bolsom Investment Trust Limited is registered
The registered office is in London (EC2A), in the Islington local authority area, London. Show EC2A 4DJ on a map.
Other trade companies in EC2A
- Simlan Management LtdCleaning companies
- Renova Secure LtdBuilders
- Auraglasspartitions LtdGlaziers
- A2D Professional Cleaning LtdCleaning companies
- Matson Co. LtdProperty developers
- Paint Hub LimitedMechanics and garages
- SJK Construction & Management LtdBuilders
- Cenlora Cleaning Group LtdCleaning companies
Shared registered office
32 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 Sidney Bolsom Investment Trust 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 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
- 00287907
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 9 May 1934 (92 years ago)
- Registered office
- 14 Bonhill Street, London, EC2A 4DJ
- Nature of business
- Development of building projects (SIC 41100)
- Year end
- 31 March (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 March 2025
- Last confirmation statement
- 24 July 2026
- Charges (mortgages)
- 4 outstanding of 21 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.
- Sidom Property Development Ltd2026
- Siena Agency Limited2018
- Sierra Building Services Limited2012
- Sig Roofing Services Ltd2025
- Sigma Men's Club Limited2024
- Signature Concepts Ltd2025
- Signature London Design and Build Limited2026
- Signature Williams Ltd.2015
All property development companies in London · All trades in London · Property developers across the UK
Frequently asked questions
When are Sidney Bolsom Investment Trust Limited's accounts due?
Sidney Bolsom Investment Trust Limited's next accounts are due at Companies House by 31 December 2026 (in 79 days), covering the period to 31 March 2026.
When is Sidney Bolsom Investment Trust Limited'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 Sidney Bolsom Investment Trust Limited still trading?
Sidney Bolsom Investment Trust 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 Sidney Bolsom Investment Trust Limited do?
Sidney Bolsom Investment Trust Limited is registered under Development of building projects (SIC 41100).
How old is Sidney Bolsom Investment Trust Limited?
Sidney Bolsom Investment Trust Limited was incorporated on 9 May 1934, 92 years ago.
Who runs Sidney Bolsom Investment Trust Limited?
Sidney Bolsom Investment Trust Limited has 3 active directors. Their names and service addresses are on the Companies House register.
Who owns Sidney Bolsom Investment Trust Limited?
One person or company has significant control of Sidney Bolsom Investment Trust Limited: an individual (owns 25% to 50% of the shares).
What is the penalty if Sidney Bolsom Investment Trust 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 Sidney Bolsom Investment Trust 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.