- Companies
- Property developers
- London
- 21 Sid Limited
21 Sid Limited
- Company number
- 08259110
- Incorporated
- 18 Oct 201213 years trading
- Registered office
- C/O Price Bailey LLP, 24 Old Bond Street, London, W1S 4AP
- Nature of business
- Development of building projects
21 Sid Limited is a 13-year-old private limited company registered in London, company number 08259110, one of 14,100 property development companies in London. Its next accounts are due at Companies House on 29 July 2027, and the CT600 for the period to 29 October 2026 is due at HMRC on 29 October 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.
- Current assets of £514K against £516K owed within a year: 1.0 times cover.
- No employees reported for the latest year (directors are often not counted as employees).
- Balance sheets on record for 6 years, 2020 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Oct 2025 | -£1,884 | £367 | £514K | £516K | 0 |
| 31 Oct 2024 | 1 | ||||
| 31 Oct 2023 | 1 | ||||
| 31 Oct 2022 | 1 | ||||
| 31 Oct 2021 | 1 | ||||
| 31 Oct 2020 | 1 |
Where 21 Sid Limited is registered
The registered office is in London (W1S), in the Westminster local authority area, London. Show W1S 4AP on a map.
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- Service Robots Group LtdFacilities management
- Bluerock Infrastructure LtdBuilders
- Kaivaro Projects LtdBuilders
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Also registered at this address
5 other companies use the same registered office as 21 Sid Limited.
- 21 Sid Property LtdProperty developers
- Nap&Co LtdProperty developers
- Ridgecote Investments LtdProperty developers
- Waverley Investments LtdProperty developers
- Zsle LimitedProperty developers
What happens if 21 Sid 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 29 July 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 30 Jul 2027 to 29 Aug 2027 | £150 |
| 1 to 3 months late | 30 Aug 2027 to 29 Oct 2027 | £375 |
| 3 to 6 months late | 30 Oct 2027 to 29 Jan 2028 | £750 |
| More than 6 months late | From 30 Jan 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 30 Oct 2027 | £200 |
| 3 months late | 29 Jan 2028 | another £200 |
| 6 months late | 29 Apr 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 29 Oct 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
- 08259110
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 18 October 2012 (13 years ago)
- Registered office
- C/O Price Bailey LLP, 24 Old Bond Street, London, W1S 4AP
- Nature of business
- Development of building projects (SIC 41100)
- Year end
- 29 October (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 October 2025
- Last confirmation statement
- 18 October 2025
- Previous names
- Harrow Road Property Limited (until 1 Oct 2024)
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.
- 21 Sid Property Ltd2025
- 21 Vicar Street Developments Limited2022
- 2123 the Bridge Ltd2024
- 217 Old Ford Road Freehold Limited2020
- 219SJS Ltd2021
- 22 FRG Ltd2025
- 22 Frognal Freehold Limited2026
- 22 Grosvenor Hill Court Limited2022
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Frequently asked questions
When are 21 Sid Limited's accounts due?
21 Sid Limited's next accounts are due at Companies House by 29 July 2027 (in 290 days), covering the period to 29 October 2026.
When is 21 Sid Limited's CT600 due?
The CT600 for the period to 29 October 2026 is due at HMRC by 29 October 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 30 July 2027.
Is 21 Sid Limited still trading?
21 Sid 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 21 Sid Limited do?
21 Sid Limited is registered under Development of building projects (SIC 41100).
How old is 21 Sid Limited?
21 Sid Limited was incorporated on 18 October 2012, 13 years ago.
What is the penalty if 21 Sid 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 21 Sid 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.