- Companies
- Specialist contractors
- London
- Blackburn & Co. Project Services Limited
Blackburn & Co. Project Services Limited
- Company number
- 07291412
- Incorporated
- 22 Jun 201016 years trading
- Registered office
- No 1, Clink Street, London, SE1 9DG
- Nature of business
- Other specialised construction activities n.e.c.
Blackburn & Co. Project Services Limited is a 16-year-old private limited company registered in London, company number 07291412, one of 4,318 specialist construction companies in London. Its next accounts are due at Companies House on 31 December 2026, and the CT600 for the period to 31 March 2026 is due at HMRC on 31 March 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 £297K (-59.7%) on the year before, to £201K.
- Net assets rose in 6 of 8 year-on-year comparisons on record.
- 28 employees on average, down from 30 the year before.
- Balance sheets on record for 9 years, 2017 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Mar 2025 | £201K | £975K | £1.2M | 28 | |
| 31 Mar 2024 | £498K | £951K | £1.4M | 30 | |
| 31 Mar 2023 | £3.3M | £4.4M | £2.1M | 20 | |
| 31 Mar 2022 | £2.4M | £3.4M | £4.6M | £2.4M | 16 |
| 31 Mar 2021 | £2.2M | £3.2M | £4.2M | £2.3M | 19 |
| 31 Mar 2020 | £1.4M | £2.1M | £3M | £1.9M | |
| 31 Mar 2019 | £1M | £1.4M | £2.2M | £1.6M | 14 |
| 31 Mar 2018 | £708K | £1.2M | £1.6M | £1.1M | 14 |
| 31 Mar 2017 | £704K | £1.2M | £1.5M | £1.1M | 13 |
Who runs and owns Blackburn & Co. Project Services Limited
From the Companies House register. Individuals are shown by initials only; the full register is on Companies House.
Officers (3)
| Name | Role | Appointed |
|---|---|---|
| C*** B*** | Director | Jun 2010 |
| R*** H*** | Director | Jun 2010 |
| J*** B*** | Director | Jul 2010 |
3 former officers
| Name | Role | Appointed | Left |
|---|---|---|---|
| M*** D*** | Director | Jan 2023 | Sep 2023 |
| J*** E*** | Director | Sep 2021 | Sep 2023 |
| A*** P*** | Director | Jan 2021 | Aug 2022 |
Person with significant control
Charges (secured borrowing)
1 of 1 registered charge is outstanding. A charge is security a lender takes over a company's assets, typically for a loan, mortgage or asset finance.
| Lender | Status | Registered |
|---|---|---|
| A private lender, A private lender, A private lender | Outstanding | Nov 2023 |
Where Blackburn & Co. Project Services Limited is registered
The registered office is in London (SE1), in the Southwark local authority area, London. Show SE1 9DG on a map.
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What happens if Blackburn & Co. Project Services 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 2027 | £200 |
| 3 months late | 30 Jun 2027 | another £200 |
| 6 months late | 30 Sep 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Mar 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
- 07291412
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 22 June 2010 (16 years ago)
- Registered office
- No 1, Clink Street, London, SE1 9DG
- Nature of business
- Other specialised construction activities n.e.c. (SIC 43999)
- Year end
- 31 March (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 March 2025
- Last confirmation statement
- 3 February 2026
- Charges (mortgages)
- 1 outstanding of 1 registered
- Previous names
- BHB Strategy Limited (until 20 Mar 2012)
Filing notes for specialist construction companies
Specialist contractors often work under CIS for main contractors. Retentions held back by the customer still count towards turnover once the work is done.
Similar companies in London
Other active specialist construction companies registered in London.
- Blackdown Restoration & Development Ltd2026
- Blackstone Development Group Limited2025
- Blackwater Fire Protection Limited2025
- Blackwood Carpentry & Build Ltd2026
- Blazebuild Ltd2015
- Blazys Ltd2023
- Blend Building Ltd2020
- Blend Silicone Limited2024
All specialist construction companies in London · All trades in London · Specialist contractors across the UK
Frequently asked questions
When are Blackburn & Co. Project Services Limited's accounts due?
Blackburn & Co. Project Services Limited's next accounts are due at Companies House by 31 December 2026 (in 78 days), covering the period to 31 March 2026.
When is Blackburn & Co. Project Services Limited's CT600 due?
The CT600 for the period to 31 March 2026 is due at HMRC by 31 March 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 January 2027.
Is Blackburn & Co. Project Services Limited still trading?
Blackburn & Co. Project Services 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 Blackburn & Co. Project Services Limited do?
Blackburn & Co. Project Services Limited is registered under Other specialised construction activities n.e.c. (SIC 43999).
How old is Blackburn & Co. Project Services Limited?
Blackburn & Co. Project Services Limited was incorporated on 22 June 2010, 16 years ago.
Who runs Blackburn & Co. Project Services Limited?
Blackburn & Co. Project Services Limited has 3 active directors, the longest-serving appointed in Jun 2010. Their names and service addresses are on the Companies House register.
Who owns Blackburn & Co. Project Services Limited?
One person or company has significant control of Blackburn & Co. Project Services Limited: Blackburn & Co. Holdings Limited (owns 75% or more of the shares).
What is the penalty if Blackburn & Co. Project Services 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 Blackburn & Co. Project Services 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.