- Companies
- Property developers
- London
- Monitor Securities Limited
Monitor Securities Limited
- Company number
- 00891987
- Incorporated
- 15 Nov 196659 years trading
- Registered office
- Tudor Cottage, Austell Gardens, London, NW7 4NS
- Nature of business
- Development of building projects
Monitor Securities Limited is a 59-year-old private limited company registered in London, company number 00891987, one of 14,100 property development companies in London. Its next accounts are due at Companies House on 30 September 2027, and the CT600 for the period to 31 December 2026 is due at HMRC on 31 December 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 £6,178 (-96.8%) on the year before, to £206.
- Net assets rose in 5 of 9 year-on-year comparisons on record.
- Current assets of £105K against £40K owed within a year: 2.6 times cover.
- 1 employee on average during the year.
- 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 |
|---|---|---|---|---|---|
| 31 Dec 2025 | £206 | £105K | £40K | 1 | |
| 31 Dec 2024 | £6,384 | £37K | £32K | 1 | |
| 31 Dec 2023 | £6,018 | £33K | £30K | 1 | |
| 31 Dec 2022 | £5,730 | £35K | £33K | 2 | |
| 31 Dec 2021 | £1,602 | £30K | £55K | 2 | |
| 31 Dec 2020 | £5,173 | £14K | £37K | 2 | |
| 31 Dec 2019 | £1,194 | £8,288 | £36K | ||
| 31 Dec 2018 | £6,796 | £36K | £59K | ||
| 31 Dec 2017 | £10K | £46K | £66K | ||
| 31 Dec 2016 | £7,245 | £40K | £64K |
Where Monitor Securities Limited is registered
The registered office is in London (NW7), in the Barnet local authority area, London. Show NW7 4NS on a map.
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What happens if Monitor Securities 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 30 September 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Oct 2027 to 31 Oct 2027 | £150 |
| 1 to 3 months late | 1 Nov 2027 to 31 Dec 2027 | £375 |
| 3 to 6 months late | 1 Jan 2028 to 31 Mar 2028 | £750 |
| More than 6 months late | From 1 Apr 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jan 2028 | £200 |
| 3 months late | 31 Mar 2028 | another £200 |
| 6 months late | 30 Jun 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Dec 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
- 00891987
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 15 November 1966 (59 years ago)
- Registered office
- Tudor Cottage, Austell Gardens, London, NW7 4NS
- Nature of business
- Development of building projects (SIC 41100)
- Year end
- 31 December (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 December 2025
- Last confirmation statement
- 20 September 2026
- Charges (mortgages)
- 1 outstanding of 6 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.
- Monk Fryston 1 Limited2025
- Monkbury Limited1976
- Monks Arbour GP Ltd2019
- Mono Properties Limited1999
- Monolith Building Limited2003
- Monomict Limited2025
- Monomind Limited1999
- Monop Limited2002
All property development companies in London · All trades in London · Property developers across the UK
Frequently asked questions
When are Monitor Securities Limited's accounts due?
Monitor Securities Limited's next accounts are due at Companies House by 30 September 2027 (in 353 days), covering the period to 31 December 2026.
When is Monitor Securities Limited's CT600 due?
The CT600 for the period to 31 December 2026 is due at HMRC by 31 December 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 October 2027.
Is Monitor Securities Limited still trading?
Monitor Securities 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 Monitor Securities Limited do?
Monitor Securities Limited is registered under Development of building projects (SIC 41100).
How old is Monitor Securities Limited?
Monitor Securities Limited was incorporated on 15 November 1966, 59 years ago.
What is the penalty if Monitor Securities 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 Monitor Securities 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.