- Companies
- Specialist contractors
- London
- B&O Construction Limited
B&O Construction Limited
- Company number
- 12747989
- Incorporated
- 16 Jul 20206 years trading
- Registered office
- C/O Archer Associates Churchill House, 120 Bunns Lane, London, NW7 2AS
- Nature of business
- Other specialised construction activities n.e.c.
B&O Construction Limited is a 6-year-old private limited company registered in London, company number 12747989, one of 4,318 specialist construction companies in London. Its next accounts are due at Companies House on 30 April 2027, and the CT600 for the period to 31 July 2026 is due at HMRC on 31 July 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 £25K (-99.1%) on the year before, to £239.
- Net assets rose in 2 of 4 year-on-year comparisons on record.
- Current assets of £14K against £11K owed within a year: 1.3 times cover.
- No employees reported for the latest year (directors are often not counted as employees).
- Balance sheets on record for 5 years, 2021 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Jul 2025 | £239 | £2,860 | £14K | £11K | 0 |
| 31 Jul 2024 | £25K | £28K | £39K | £18K | 2 |
| 31 Jul 2023 | £15K | £8,602 | £16K | £5,466 | 4 |
| 31 Jul 2022 | -£15K | £1,300 | £2,614 | £19K | 4 |
| 31 Jul 2021 | £9,432 | £37K | £37K | £27K | 4 |
Where B&O Construction Limited is registered
The registered office is in London (NW7), in the Barnet local authority area, London. Show NW7 2AS on a map.
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Shared registered office
47 companies on our pages use this registered office address. An address shared this widely is usually an accountant's office or a company formation agent's service address, not where the business trades from.
What happens if B&O Construction 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 April 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 May 2027 to 31 May 2027 | £150 |
| 1 to 3 months late | 1 Jun 2027 to 31 Jul 2027 | £375 |
| 3 to 6 months late | 1 Aug 2027 to 31 Oct 2027 | £750 |
| More than 6 months late | From 1 Nov 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Aug 2027 | £200 |
| 3 months late | 31 Oct 2027 | another £200 |
| 6 months late | 31 Jan 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Jul 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
- 12747989
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 16 July 2020 (6 years ago)
- Registered office
- C/O Archer Associates Churchill House, 120 Bunns Lane, London, NW7 2AS
- Nature of business
- Other specialised construction activities n.e.c. (SIC 43999)
- Year end
- 31 July (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 July 2025
- Last confirmation statement
- 12 June 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.
- B&P Associates Ltd2025
- B&S Building Solutions Ltd2013
- B&Vy Construction Ltd2016
- B-Line Ltd2015
- B.A Abseiling Ltd2010
- B.S.M Build Limited2013
- B3 Construction Consultancy Limited2011
- Baaura Limited2024
All specialist construction companies in London · All trades in London · Specialist contractors across the UK
Frequently asked questions
When are B&O Construction Limited's accounts due?
B&O Construction Limited's next accounts are due at Companies House by 30 April 2027 (in 199 days), covering the period to 31 July 2026.
When is B&O Construction Limited's CT600 due?
The CT600 for the period to 31 July 2026 is due at HMRC by 31 July 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 May 2027.
Is B&O Construction Limited still trading?
B&O Construction 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 B&O Construction Limited do?
B&O Construction Limited is registered under Other specialised construction activities n.e.c. (SIC 43999).
How old is B&O Construction Limited?
B&O Construction Limited was incorporated on 16 July 2020, 6 years ago.
What is the penalty if B&O Construction 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 B&O Construction 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.