- Companies
- Civil engineering
- Brentwood
- Triplex Industrial Contractors Limited
Triplex Industrial Contractors Limited
- Company number
- 01363670
- Incorporated
- 19 Apr 197848 years trading
- Registered office
- Unit 6 Codham Hall Farm, Great Warley, Brentwood, Essex, CM13 3FB
- Nature of business
- Construction of roads and motorways; Construction of other civil engineering projects n.e.c.; Test drilling and boring; Other specialised construction activities n.e.c.
Triplex Industrial Contractors Limited is a 48-year-old private limited company registered in Brentwood, company number 01363670, one of 39 civil engineering contractors in Brentwood. 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 up £149K (+7.8%) on the year before, to £2.1M.
- Net assets rose in 6 of 9 year-on-year comparisons on record.
- Current assets of £3.3M against £2.1M owed within a year: 1.6 times cover.
- 93 employees on average, up from 91 the year before.
- 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 Mar 2025 | £2.1M | £1.2M | £3.3M | £2.1M | 93 |
| 31 Mar 2024 | £1.9M | £1.3M | £3.4M | £2M | 91 |
| 31 Mar 2023 | £1.6M | £2.7M | 82 | ||
| 31 Mar 2022 | £1M | £494K | £2.3M | £1.3M | 80 |
| 31 Mar 2021 | £1.1M | £551K | £2M | £849K | 62 |
| 31 Mar 2020 | £1.2M | £760K | £1.7M | £796K | 43 |
| 31 Mar 2019 | £1.1M | £1.1M | £1.8M | £736K | 43 |
| 31 Mar 2018 | £1.3M | £852K | £1.6M | £534K | 40 |
| 30 Apr 2017 | £1M | £813K | £1.3M | £524K | 40 |
| 30 Apr 2016 | £913K | £793K | £1.6M | £892K |
Public contracts won
Triplex Industrial Contractors Limited has one public sector contract award on record; the ones with their own published value total £54K (2026). Source: Contracts Finder and Find a Tender award notices.
| Buyer | Contract | Value | Awarded |
|---|---|---|---|
| Mid Suffolk District Council | Litter Picking - A14 | £54K | 3 Aug 2026 |
Where Triplex Industrial Contractors Limited is registered
The registered office is in Brentwood (CM13), in the Brentwood local authority area, East of England. Show CM13 3FB on a map.
Other trade companies in CM13
- Van & Car Self Drive LtdMotor traders
- Marsh Harrier Developments LtdProperty developers
- Motor Dealer Sales LtdMotor traders
- Electrical PN LtdElectricians
- Torrtec LtdPlumbers and heating engineers
- Flushed Through Drainage Services LtdPlumbers and heating engineers
- RJFD Electrical LtdCivil engineering
- Welsted LtdJoiners and carpenters
Also registered at this address
1 other company uses the same registered office as Triplex Industrial Contractors Limited.
- Progrid LimitedCivil engineering
What happens if Triplex Industrial Contractors 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
- 01363670
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 19 April 1978 (48 years ago)
- Registered office
- Unit 6 Codham Hall Farm, Great Warley, Brentwood, Essex, CM13 3FB
- Nature of business
- Construction of roads and motorways (SIC 42110)
Construction of other civil engineering projects n.e.c. (SIC 42990)
Test drilling and boring (SIC 43130)
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
- 18 September 2026
- Charges (mortgages)
- 1 outstanding of 2 registered
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 in Brentwood
Other active civil engineering contractors registered in Brentwood.
- UK Line Ltd2021
- Woodman Warley Limited2025
- Xmodal Energy Limited2026
- ZBC Lighting Ltd2024
- Alpha Conservation Limited2021
- Ardgal Limited2023
- Asunny Construction Ltd2024
- Bilton & Johnson (Building) Co Ltd2004
All civil engineering contractors in Brentwood · All trades in Brentwood · Civil engineering across the UK
Frequently asked questions
When are Triplex Industrial Contractors Limited's accounts due?
Triplex Industrial Contractors Limited's next accounts are due at Companies House by 31 December 2026 (in 79 days), covering the period to 31 March 2026.
When is Triplex Industrial Contractors 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 Triplex Industrial Contractors Limited still trading?
Triplex Industrial Contractors 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 Triplex Industrial Contractors Limited do?
Triplex Industrial Contractors Limited is registered under Construction of roads and motorways (SIC 42110); Construction of other civil engineering projects n.e.c. (SIC 42990); Test drilling and boring (SIC 43130); Other specialised construction activities n.e.c. (SIC 43999).
How old is Triplex Industrial Contractors Limited?
Triplex Industrial Contractors Limited was incorporated on 19 April 1978, 48 years ago.
Has Triplex Industrial Contractors Limited won public sector contracts?
Yes. Triplex Industrial Contractors Limited has one contract award from public bodies on Contracts Finder and Find a Tender (those with their own published value total £54K), most recently from Mid Suffolk District Council.
What is the penalty if Triplex Industrial Contractors 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 Triplex Industrial Contractors 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.