- Company number
- 17027330
- Incorporated
- 11 Feb 2026
- Registered office
- 10 Norwich Street, London, EC4A 1BD
- Nature of business
- Construction of commercial buildings; Construction of domestic buildings
Project1 UK Contracting Ltd is a newly incorporated private limited company registered in London, company number 17027330, one of 12,075 building contractors in London. Its next accounts are due at Companies House on 30 September 2027, and its first CT600 is due at HMRC on 10 February 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 Project1 UK Contracting Ltd is registered
The registered office is in London (EC4A), in the City of London local authority area, London. Show EC4A 1BD on a map.
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- Square One Decorating & Plastering LimitedPlasterers
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Also registered at this address
4 other companies use the same registered office as Project1 UK Contracting Ltd.
- LBD 2 LimitedProperty developers
- London Bridge Development Contractors LimitedProperty developers
- London Bridge Development LimitedProperty developers
- S.Q.P. LimitedProperty developers
What happens if Project1 UK Contracting 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 2029 | £200 |
| 3 months late | 31 Mar 2029 | another £200 |
| 6 months late | 30 Jun 2029 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Dec 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
- 17027330
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 11 February 2026
- Registered office
- 10 Norwich Street, London, EC4A 1BD
- Nature of business
- Construction of commercial buildings (SIC 41201)
Construction of domestic buildings (SIC 41202) - Year end
- 31 December (accounting reference date)
- Accounts type
- No accounts filed yet
Filing notes for building contractors
Building companies often run the Construction Industry Scheme as a contractor, a subcontractor or both. CIS deductions suffered during the year are set against the PAYE bill, and any unrecovered balance at the year end matters when the accounts are drawn up.
Similar companies in London
Other active building contractors registered in London.
- Prokraft Ltd2025
- Prolec Group Ltd2024
- Prometheus Building Ltd2008
- Prominent Properties Limited2013
- Propertec Ltd2021
- Properteers Limited2013
- Propertk Ltd2012
- Property & Maintenance Ltd2022
All building contractors in London · All trades in London · Builders across the UK
Frequently asked questions
When are Project1 UK Contracting Ltd's accounts due?
Project1 UK Contracting Ltd's next accounts are due at Companies House by 30 September 2027 (in 352 days), covering the period to 31 December 2027.
When is Project1 UK Contracting 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 10 February 2027, due by 10 February 2028, and one for the period to 31 December 2027, due by 31 December 2028. Corporation tax is payable 9 months and 1 day after the end of each.
Is Project1 UK Contracting Ltd still trading?
Project1 UK Contracting 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 Project1 UK Contracting Ltd do?
Project1 UK Contracting Ltd is registered under Construction of commercial buildings (SIC 41201); Construction of domestic buildings (SIC 41202).
How old is Project1 UK Contracting Ltd?
Project1 UK Contracting Ltd was incorporated on 11 February 2026, less than a year ago.
What is the penalty if Project1 UK Contracting 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 Project1 UK Contracting 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.