- Companies
- Installers
- London
- Harbour Design Studio Ltd
Harbour Design Studio Ltd
- Company number
- 17076254
- Incorporated
- 7 Mar 2026
- Registered office
- 405 Kings Road, Suite 511, London, SW10 0BB
- Nature of business
- Other construction installation
Harbour Design Studio Ltd is a newly incorporated private limited company registered in London, company number 17076254, one of 2,278 installation companies (insulation, lifts, shutters and similar) in London. Its next accounts are due at Companies House on 7 December 2027, and its first CT600 is due at HMRC on 6 March 2028.
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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Where Harbour Design Studio Ltd is registered
The registered office is in London (SW10), in the Kensington and Chelsea local authority area, London. Show SW10 0BB on a map.
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- Sbelectric&Plumbing LimitedElectricians
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Also registered at this address
3 other companies use the same registered office as Harbour Design Studio Ltd.
- Chelsea and Westminster Roofing LtdRoofers
- Imka LtdBuilders
- Masterslate Roofing LimitedRoofers
What happens if Harbour Design Studio 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 7 December 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 8 Dec 2027 to 7 Jan 2028 | £150 |
| 1 to 3 months late | 8 Jan 2028 to 7 Mar 2028 | £375 |
| 3 to 6 months late | 8 Mar 2028 to 7 Jun 2028 | £750 |
| More than 6 months late | From 8 Jun 2028 | £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
- 17076254
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 7 March 2026
- Registered office
- 405 Kings Road, Suite 511, London, SW10 0BB
- Nature of business
- Other construction installation (SIC 43290)
- Year end
- 31 March (accounting reference date)
- Accounts type
- No accounts filed yet
- Previous names
- Harbour Design Projects Ltd (until 25 May 2026)
Filing notes for installation companies (insulation, lifts, shutters and similar)
Installation companies (insulation, lifts, shutters, solar and similar) often buy stock and equipment up front, so stock at the year end and capital allowances both affect the tax bill.
Similar companies in London
Other active installation companies (insulation, lifts, shutters and similar) registered in London.
- Harbour Steel Services Limited2013
- Harka London Limited2014
- Harmony Engineering Services Limited2025
- Harold Ernest Dixon Limited2025
- Harrison External Wall Insulation Systems Ltd2020
- Hart of Gardens and Building Maintenance Ltd2021
- Hartley Kitchens Ltd2023
- Haskir Constructions Limited2017
All installation companies (insulation, lifts, shutters and similar) in London · All trades in London · Installers across the UK
Frequently asked questions
When are Harbour Design Studio Ltd's accounts due?
Harbour Design Studio Ltd's next accounts are due at Companies House by 7 December 2027 (in 420 days), covering the period to 31 March 2027.
When is Harbour Design Studio Ltd's CT600 due?
The first accounts cover more than 12 months, so there are two Company Tax Returns: one for the 12 months to 6 March 2027, due by 6 March 2028, 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 Harbour Design Studio Ltd still trading?
Harbour Design Studio 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 Harbour Design Studio Ltd do?
Harbour Design Studio Ltd is registered under Other construction installation (SIC 43290).
How old is Harbour Design Studio Ltd?
Harbour Design Studio Ltd was incorporated on 7 March 2026, less than a year ago.
What is the penalty if Harbour Design Studio 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 Harbour Design Studio 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.