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- CMB Construction Limited
Company profile · Civil engineering
CMB Construction Limited
CMB Construction Limited is a 25-year-old private limited company, company number 04259963, one of the UK's civil engineering contractors. 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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Financial snapshot, 2025
From the balance sheet at 31 July 2025, as filed at Companies House.
CMB Construction 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 up £1,352 (+10.3%) on the year before, to £15K.
- Net assets rose in 4 of 9 year-on-year comparisons on record.
- Current assets of £27K against £42K owed within a year: 0.6 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 |
|---|---|---|---|---|---|
| 31 Jul 2025 | £15K | £27K | £42K | 2 | |
| 31 Jul 2024 | £13K | £18K | £32K | 2 | |
| 31 Jul 2023 | £8,367 | £27K | £36K | 2 | |
| 31 Jul 2022 | £12K | £19K | £31K | 2 | |
| 31 Jul 2021 | £13K | £13K | £27K | 2 | |
| 31 Jul 2020 | £1,090 | £15K | £18K | 2 | |
| 31 Jul 2019 | £2,370 | £2,937 | £1,888 | ||
| 31 Jul 2018 | £29K | £35K | £7,064 | ||
| 31 Jul 2017 | £37K | £51K | £17K | ||
| 31 Jul 2016 | £35K | £50K | £18K |
Where CMB Construction Limited is registered
The registered office is in the NW10 postcode district, in the Brent local authority area, England. Show NW10 4QY on a map.
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What happens if CMB 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
- 04259963
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 26 July 2001 (25 years ago)
- Registered office
- 90A Walm Lane, London, NW10 4QY
- Nature of business
- Construction of other civil engineering projects n.e.c. (SIC 42990)
- Year end
- 31 July (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 July 2025
- Last confirmation statement
- 24 October 2025
Filing notes for civil engineering contractors
Civil engineering contractors usually carry plant and machinery, so capital allowances (the annual investment allowance and the main pool) do much of the work in the corporation tax computation.
Similar companies
Other active civil engineering contractors.
- Alwyn Jones Limited2001
- Colwill Contracting Limited2001
- R.Bau Limited2001
- K & L M Builders Limited2001
- Thornfalcon Services Limited2001
- L & S Construction Limited2001
- Skillmaster Building Limited2001
- P.J. Engineering (Swanage) Limited2001
Civil engineering across the UK
Frequently asked questions
When are CMB Construction Limited's accounts due?
CMB Construction Limited's next accounts are due at Companies House by 30 April 2027 (in 200 days), covering the period to 31 July 2026.
When is CMB 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 CMB Construction Limited still trading?
CMB 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 CMB Construction Limited do?
CMB Construction Limited is registered under Construction of other civil engineering projects n.e.c. (SIC 42990).
How old is CMB Construction Limited?
CMB Construction Limited was incorporated on 26 July 2001, 25 years ago.
What is the penalty if CMB 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 CMB Construction Limited on Companies House for filed documents, officers and the full history.
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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.