- Companies
- Specialist contractors
- Hemel Hempstead
- Alcom Environmental Limited
Alcom Environmental Limited
- Company number
- 15480555
- Incorporated
- 10 Feb 20242 years trading
- Registered office
- 83 High Street, Hemel Hempstead, HP1 3AH
- Nature of business
- Other specialised construction activities n.e.c.
Alcom Environmental Limited is a 2-year-old private limited company registered in Hemel Hempstead, company number 15480555, one of 104 specialist construction companies in Hemel Hempstead. 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.
Is this your company?
File the accounts to Companies House and the CT600 to HMRC yourself with A.X.E.L Filing. One set of questions, both filings, £49 flat. No accountant, no subscription.
File for Alcom Environmental LimitedOr get a reminder before each deadline
Free. We email you 60, 30, 14, 7 and 1 days before the accounts, CT600 and confirmation statement are due. Unsubscribe in one click.
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 £48K (+133.2%) on the year before, to £84K.
- Current assets of £140K against £80K owed within a year: 1.8 times cover.
- 6 employees on average, up from 2 the year before.
- Balance sheets on record for 2 years, 2025 to 2026.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Mar 2026 | £84K | £17K | £140K | £80K | 6 |
| 31 Mar 2025 | £36K | £16K | £66K | £30K | 2 |
Who runs and owns Alcom Environmental Limited
From the Companies House register. Individuals are shown by initials only; the full register is on Companies House.
Officers (2)
| Name | Role | Appointed |
|---|---|---|
| A*** H*** | Director | Feb 2024 |
| L*** H*** | Director | Feb 2024 |
People with significant control (2)
Where Alcom Environmental Limited is registered
The registered office is in Hemel Hempstead (HP1), in the Dacorum local authority area, East of England. Show HP1 3AH on a map.
Other trade companies in HP1
- Lem Road Tanker Repairs LtdMachinery repair and installation
- Dover Heights Group LtdJoiners and carpenters
- Trusentri LtdElectricians
- Cecil Property Group LimitedProperty developers
- Queensway Motors LtdMotor traders
- W.Parkins Building Services LtdBuilders
- Harvey & Sons Fire and Electrical LimitedElectricians
- Buzzard Fire Protection LtdSpecialist contractors
Shared registered office
34 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 Alcom Environmental 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
- 15480555
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 10 February 2024 (2 years ago)
- Registered office
- 83 High Street, Hemel Hempstead, HP1 3AH
- Nature of business
- 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
- 9 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 Hemel Hempstead
Other active specialist construction companies registered in Hemel Hempstead.
- Alex Formwork Ltd2019
- Alf Civil Ltd2025
- Altera (PVT) Limited2025
- Alv Contractors Ltd2026
- Anb Building Construction UK Limited2021
- Ap Services (Herts) Ltd2025
- Apolodor Construction Services Ltd2021
- Ari Scaffolding Ltd2025
All specialist construction companies in Hemel Hempstead · All trades in Hemel Hempstead · Specialist contractors across the UK
Frequently asked questions
When are Alcom Environmental Limited's accounts due?
Alcom Environmental 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 Alcom Environmental 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 Alcom Environmental Limited still trading?
Alcom Environmental 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 Alcom Environmental Limited do?
Alcom Environmental Limited is registered under Other specialised construction activities n.e.c. (SIC 43999).
How old is Alcom Environmental Limited?
Alcom Environmental Limited was incorporated on 10 February 2024, 2 years ago.
Who runs Alcom Environmental Limited?
Alcom Environmental Limited has 2 active directors, the longest-serving appointed in Feb 2024. Their names and service addresses are on the Companies House register.
Who owns Alcom Environmental Limited?
2 people or companies have significant control of Alcom Environmental Limited: an individual (owns 25% to 50% of the shares); an individual (owns 25% to 50% of the shares).
What is the penalty if Alcom Environmental 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 Alcom Environmental 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.