- Companies
- Property developers
- London
- Sellar Design and Development Ltd
Sellar Design and Development Ltd
- Company number
- 06380928
- Incorporated
- 25 Sep 200719 years trading
- Registered office
- Ground Floor Threeways House, 40-44 Clipstone Street, London, W1W 5DW
- Nature of business
- Development of building projects
Sellar Design and Development Ltd is a 19-year-old private limited company registered in London, company number 06380928, 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 £1.8M on the year before, to -£1.8M.
- Net assets rose in 3 of 9 year-on-year comparisons on record.
- Current assets of £7.7M against £12M owed within a year: 0.7 times cover.
- 25 employees 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 | -£1.8M | £250K | £7.7M | £12M | 25 |
| 31 Dec 2024 | £88K | £1.3M | £10M | £12M | 25 |
| 31 Mar 2024 | £2.2M | £819K | £9.9M | £10M | 30 |
| 31 Mar 2023 | £5.6M | £494K | £8.1M | £5.4M | 30 |
| 30 Sep 2021 | £8.8M | £600K | £19M | £3.2M | 35 |
| 30 Sep 2020 | £7.3M | £2.3M | £18M | £7.2M | 26 |
| 30 Sep 2019 | £2.6M | £607K | £8.8M | £3M | 0 |
| 30 Sep 2018 | £3.6M | £810K | £8.9M | £2.4M | |
| 30 Sep 2017 | £4.1M | £838K | £8.5M | £2.5M | |
| 30 Sep 2016 | £4M | £886K | £8.2M | £2.4M |
Where Sellar Design and Development Ltd is registered
The registered office is in London (W1W), in the Westminster local authority area, London. Show W1W 5DW on a map.
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Also registered at this address
5 other companies use the same registered office as Sellar Design and Development Ltd.
- Camden Mixed Developments LtdProperty developers
- Mersey 1 LimitedProperty developers
- Sellar Mersey DM LimitedProperty developers
- Sellar Mersey Investments LimitedProperty developers
- Sellar Paddington LimitedProperty developers
What happens if Sellar Design and Development 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 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
- 06380928
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 25 September 2007 (19 years ago)
- Registered office
- Ground Floor Threeways House, 40-44 Clipstone Street, London, W1W 5DW
- Nature of business
- Development of building projects (SIC 41100)
- Year end
- 31 December (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 December 2025
- Last confirmation statement
- 25 September 2026
- Previous names
- Sellar Developments Limited (until 22 May 2009)
Bellamain Ltd (until 22 Jan 2009)
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.
- Sellar Mersey DM Limited2020
- Sellar Mersey Investments Limited2020
- Sellar Paddington Limited2013
- Sellers Construction and Demolition Ltd2025
- Selling Solution Cpa Ltd2016
- Selwyn & Company Limited1986
- Semenyo MS Ltd2024
- Semple Stone Ltd2026
All property development companies in London · All trades in London · Property developers across the UK
Frequently asked questions
When are Sellar Design and Development Ltd's accounts due?
Sellar Design and Development Ltd's next accounts are due at Companies House by 30 September 2027 (in 352 days), covering the period to 31 December 2026.
When is Sellar Design and Development Ltd'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 Sellar Design and Development Ltd still trading?
Sellar Design and Development 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 Sellar Design and Development Ltd do?
Sellar Design and Development Ltd is registered under Development of building projects (SIC 41100).
How old is Sellar Design and Development Ltd?
Sellar Design and Development Ltd was incorporated on 25 September 2007, 19 years ago.
What is the penalty if Sellar Design and Development 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 Sellar Design and Development 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.