- Companies
- Civil engineering
- Brentwood
- Alpha Conservation Limited
Alpha Conservation Limited
- Company number
- 13567637
- Incorporated
- 16 Aug 20215 years trading
- Registered office
- Blue House Farm Office Brentwood Road, West Horndon, Brentwood, CM13 3LX
- Nature of business
- Construction of water projects
Alpha Conservation Limited is a 5-year-old private limited company registered in Brentwood, company number 13567637, 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 down £4,497 (-15.5%) on the year before, to £25K.
- Net assets rose in 1 of 3 year-on-year comparisons on record.
- Current assets of £30K against £7,333 owed within a year: 4.1 times cover.
- 1 employee on average during the year.
- Balance sheets on record for 4 years, 2022 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Mar 2025 | £25K | £30K | £7,333 | 1 | |
| 31 Aug 2024 | £29K | £33K | £6,592 | 1 | |
| 31 Aug 2023 | £31K | £31K | £1,071 | 1 | |
| 31 Aug 2022 | £6,776 | £17K | £10K | 1 |
Where Alpha Conservation Limited is registered
The registered office is in Brentwood (CM13), in the Thurrock local authority area, East of England. Show CM13 3LX on a map.
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Also registered at this address
21 other companies use the same registered office as Alpha Conservation Limited.
- Albert James Interiors LimitedFinishing trades
- CDB Construction Property Services LtdSpecialist contractors
- Countryside Spaces LtdProperty developers
- Dan Wright Fascia LimitedInstallers
- Era Lifts LtdMachinery repair and installation
- Gilmore's Plumbing LtdPlumbers and heating engineers
- Holgate Construction (London) LtdProperty developers
- J & L Davison Plumbing LimitedPlumbers and heating engineers
- JRW Automotive LimitedMechanics and garages
- JST Windows & Doors LtdSpecialist contractors
- LJB Building Services (Brentwood) LimitedProperty developers
- Mayfield Service (London) LimitedSpecialist contractors
- RTS Building & Maintenance LtdSpecialist contractors
- SNR Electrical LtdElectricians
- Soleasy LtdInstallers
- Stone Ark LB & Co LtdSpecialist contractors
- Tannoureen LtdCivil engineering
- Trade Motor Salvage LtdMotor traders
- Truestone Landscapes LimitedLandscapers and gardeners
- Wager Group LimitedSpecialist contractors
- WTT Corporation LimitedMotor traders
What happens if Alpha Conservation 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
- 13567637
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 16 August 2021 (5 years ago)
- Registered office
- Blue House Farm Office Brentwood Road, West Horndon, Brentwood, CM13 3LX
- Nature of business
- Construction of water projects (SIC 42910)
- Year end
- 31 March (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 March 2025
- Last confirmation statement
- 15 August 2026
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.
- Ardgal Limited2023
- Asunny Construction Ltd2024
- Bilton & Johnson (Building) Co Ltd2004
- Bilton & Johnson (Construction) Ltd2021
- Cable Tracing Services Limited1996
- CM Construction and Civil Engineering Ltd2014
- D Smith Brickwork & Construction Ltd2015
- FS Synergy Ltd2025
All civil engineering contractors in Brentwood · All trades in Brentwood · Civil engineering across the UK
Frequently asked questions
When are Alpha Conservation Limited's accounts due?
Alpha Conservation Limited's next accounts are due at Companies House by 31 December 2026 (in 80 days), covering the period to 31 March 2026.
When is Alpha Conservation 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 Alpha Conservation Limited still trading?
Alpha Conservation 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 Alpha Conservation Limited do?
Alpha Conservation Limited is registered under Construction of water projects (SIC 42910).
How old is Alpha Conservation Limited?
Alpha Conservation Limited was incorporated on 16 August 2021, 5 years ago.
What is the penalty if Alpha Conservation 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 Alpha Conservation 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.