- Companies
- Property developers
- London
- Seven Islands Mount Anvil Limited
Seven Islands Mount Anvil Limited
- Company number
- 16887964
- Incorporated
- 3 Dec 2025
- Registered office
- 140 Aldersgate Street, London, EC1A 4HY
- Nature of business
- Development of building projects
Seven Islands Mount Anvil Limited is a newly incorporated private limited company registered in London, company number 16887964, one of 14,100 property development companies in London. Its next accounts are due at Companies House on 31 December 2026, and its first CT600 is due at HMRC on 2 December 2027.
Key dates
This company has not filed accounts yet. First accounts are due 21 months after incorporation, and the first period can run longer than a year.
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Who runs and owns Seven Islands Mount Anvil Limited
From the Companies House register. Individuals are shown by initials only; the full register is on Companies House.
Officers (3)
| Name | Role | Appointed |
|---|---|---|
| D*** S*** | Director | Dec 2025 |
| Mount Anvil New Holdings Limited | Director (company) | Dec 2025 |
| D*** S*** | Secretary | Dec 2025 |
Person with significant control
Where Seven Islands Mount Anvil Limited is registered
The registered office is in London (EC1A), in the City of London local authority area, London. Show EC1A 4HY on a map.
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Also registered at this address
2 other companies use the same registered office as Seven Islands Mount Anvil Limited.
- Beormund Mount Anvil LimitedProperty developers
- Priter RLBC Mount Anvil LimitedProperty developers
What happens if Seven Islands Mount Anvil 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 2028 | £200 |
| 3 months late | 30 Jun 2028 | another £200 |
| 6 months late | 30 Sep 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Mar 2029 | 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
- 16887964
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 3 December 2025
- Registered office
- 140 Aldersgate Street, London, EC1A 4HY
- Nature of business
- Development of building projects (SIC 41100)
- Year end
- 31 March (accounting reference date)
- Accounts type
- No accounts filed yet
- Previous names
- Mount Anvil Seven Islands Limited (until 30 Dec 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.
- Seven Middle East Limited2020
- Seven Miles Limited2018
- Seven Partnership Limited2016
- Seven Realty Limited2003
- Seven Split Limited2022
- Seven States Limited2017
- Seventy6Developments Ltd2026
- Severn Development Ltd2026
All property development companies in London · All trades in London · Property developers across the UK
Frequently asked questions
When are Seven Islands Mount Anvil Limited's accounts due?
Seven Islands Mount Anvil Limited's next accounts are due at Companies House by 31 December 2026 (in 79 days), covering the period to 31 March 2027.
When is Seven Islands Mount Anvil Limited's CT600 due?
The first accounts cover more than 12 months, so there are two Company Tax Returns: one for the 12 months to 2 December 2026, due by 2 December 2027, and one for the period to 31 March 2027, due by 31 March 2028. Corporation tax is payable 9 months and 1 day after the end of each.
Is Seven Islands Mount Anvil Limited still trading?
Seven Islands Mount Anvil 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 Seven Islands Mount Anvil Limited do?
Seven Islands Mount Anvil Limited is registered under Development of building projects (SIC 41100).
How old is Seven Islands Mount Anvil Limited?
Seven Islands Mount Anvil Limited was incorporated on 3 December 2025, less than a year ago.
Who runs Seven Islands Mount Anvil Limited?
Seven Islands Mount Anvil Limited has 2 active directors, the longest-serving appointed in Dec 2025. Their names and service addresses are on the Companies House register.
Who owns Seven Islands Mount Anvil Limited?
One person or company has significant control of Seven Islands Mount Anvil Limited: Mount Anvil New Holdings Limited (owns 75% or more of the shares).
What is the penalty if Seven Islands Mount Anvil 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 Seven Islands Mount Anvil 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.