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- B3 Construction Consultancy Limited
Company profile · Specialist contractors
B3 Construction Consultancy Limited
B3 Construction Consultancy Limited is a 15-year-old private limited company registered in London, company number 07539872, one of 4,318 specialist construction companies in London. Its next accounts are due at Companies House on 30 November 2026, and the CT600 for the period to 28 February 2026 is due at HMRC on 28 February 2027.
Key dates
Worked out from the year end and filing history on the Companies House register.
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Financial snapshot, 2025
From the balance sheet at 28 February 2025, as filed at Companies House.
B3 Construction Consultancy Limited over the years
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 unchanged on the year before, at £17K.
- Net assets rose in 6 of 9 year-on-year comparisons on record.
- Current assets of £110K against £77K owed within a year: 1.4 times cover.
- 2 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 |
|---|---|---|---|---|---|
| 28 Feb 2025 | £17K | £110K | £77K | 2 | |
| 29 Feb 2024 | £17K | £110K | £77K | 2 | |
| 28 Feb 2023 | £1,032 | £76K | £38K | 1 | |
| 28 Feb 2022 | -£864 | £76K | £35K | 1 | |
| 28 Feb 2021 | -£22K | £54K | £26K | 1 | |
| 29 Feb 2020 | -£21K | £34K | £55K | 1 | |
| 28 Feb 2019 | -£10K | £10K | |||
| 28 Feb 2018 | -£12K | £12K | |||
| 28 Feb 2017 | -£12K | £12K | |||
| 29 Feb 2016 | -£12K | £0 | £12K |
Where B3 Construction Consultancy Limited is registered
The registered office is in London (SE25), in the Croydon local authority area, London. Show SE25 6BF on a map.
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- GCS Electrical Services LimitedElectricians
What happens if B3 Construction Consultancy 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 30 November 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Dec 2026 to 31 Dec 2026 | £150 |
| 1 to 3 months late | 1 Jan 2027 to 28 Feb 2027 | £375 |
| 3 to 6 months late | 1 Mar 2027 to 31 May 2027 | £750 |
| More than 6 months late | From 1 Jun 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Mar 2027 | £200 |
| 3 months late | 28 May 2027 | another £200 |
| 6 months late | 28 Aug 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 28 Feb 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
- 07539872
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 23 February 2011 (15 years ago)
- Registered office
- Langham Court, 1A Suffolk Road, London, SE25 6BF
- Nature of business
- Other specialised construction activities n.e.c. (SIC 43999)
- Year end
- 29 February (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 28 February 2025
- Last confirmation statement
- 23 February 2026
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.
- Baaura Limited2024
- Baazzaab Network Ltd2025
- Bac Services and Supplies Ltd2025
- Backtobrick Ltd2026
- Bactec Ltd2025
- Baker and Sons Ltd2025
- Baker-Palma Ltd2026
- Balkan Insulation Ltd2023
All specialist construction companies in London · All trades in London · Specialist contractors across the UK
Frequently asked questions
When are B3 Construction Consultancy Limited's accounts due?
B3 Construction Consultancy Limited's next accounts are due at Companies House by 30 November 2026 (in 49 days), covering the period to 28 February 2026.
When is B3 Construction Consultancy Limited's CT600 due?
The CT600 for the period to 28 February 2026 is due at HMRC by 28 February 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 December 2026.
Is B3 Construction Consultancy Limited still trading?
B3 Construction Consultancy 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 B3 Construction Consultancy Limited do?
B3 Construction Consultancy Limited is registered under Other specialised construction activities n.e.c. (SIC 43999).
How old is B3 Construction Consultancy Limited?
B3 Construction Consultancy Limited was incorporated on 23 February 2011, 15 years ago.
What is the penalty if B3 Construction Consultancy 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 B3 Construction Consultancy 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.