- Companies
- Electricians
- Chesterfield
- Alphagen Systems Limited
Alphagen Systems Limited
- Company number
- 15719933
- Incorporated
- 14 May 20242 years trading
- Registered office
- 1 Dunston Place, Dunston Road, Chesterfield, S41 8NL
- Nature of business
- Electrical installation
Alphagen Systems Limited is a 2-year-old private limited company registered in Chesterfield, company number 15719933, one of 115 electrical contractors in Chesterfield. Its next accounts are due at Companies House on 31 March 2027, and the CT600 for the period to 30 June 2026 is due at HMRC on 30 June 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 30 June 2025, as filed at Companies House.
Where Alphagen Systems Limited is registered
The registered office is in Chesterfield (S41), in the Chesterfield local authority area, East Midlands. Show S41 8NL on a map.
Other trade companies in S41
- You Motors LtdMotor traders
- Lets Volt LimitedElectricians
- LD Flooring Group LtdFloor and wall tilers
- DB Power Solutions LtdMachinery repair and installation
- Atk Arb Maintenance LtdLandscapers and gardeners
- Convertspace LtdBuilders
- TGH Industrial Spray Services LtdPainters and decorators
- 3B'S Electrical LtdElectricians
Also registered at this address
1 other company uses the same registered office as Alphagen Systems Limited.
- Alphagen LtdMachinery repair and installation
What happens if Alphagen Systems 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 March 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Apr 2027 to 30 Apr 2027 | £150 |
| 1 to 3 months late | 1 May 2027 to 30 Jun 2027 | £375 |
| 3 to 6 months late | 1 Jul 2027 to 30 Sep 2027 | £750 |
| More than 6 months late | From 1 Oct 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jul 2027 | £200 |
| 3 months late | 30 Sep 2027 | another £200 |
| 6 months late | 30 Dec 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Jun 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
- 15719933
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 14 May 2024 (2 years ago)
- Registered office
- 1 Dunston Place, Dunston Road, Chesterfield, S41 8NL
- Nature of business
- Electrical installation (SIC 43210)
- Year end
- 30 June (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 30 June 2025
- Last confirmation statement
- 23 July 2026
Filing notes for electrical contractors
Electrical contracting companies are often a director plus a van and tools. Most fall within the micro-entity rules, so the accounts filed at Companies House are short, and the CT600 carries the tax detail.
Similar companies in Chesterfield
Other active electrical contractors registered in Chesterfield.
- Ame Elec Ltd2024
- Ap Contracting (Chesterfield) Limited2015
- Apc Electrical Engineers Ltd2006
- Ashgate Electrical Ltd2012
- Ashthorne Limited2015
- Aspire Eco Energy Limited2010
- Austins Electrical Ltd2007
- B and C Electrical and Security Limited2019
All electrical contractors in Chesterfield · All trades in Chesterfield · Electricians across the UK
Frequently asked questions
When are Alphagen Systems Limited's accounts due?
Alphagen Systems Limited's next accounts are due at Companies House by 31 March 2027 (in 170 days), covering the period to 30 June 2026.
When is Alphagen Systems Limited's CT600 due?
The CT600 for the period to 30 June 2026 is due at HMRC by 30 June 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 April 2027.
Is Alphagen Systems Limited still trading?
Alphagen Systems 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 Alphagen Systems Limited do?
Alphagen Systems Limited is registered under Electrical installation (SIC 43210).
How old is Alphagen Systems Limited?
Alphagen Systems Limited was incorporated on 14 May 2024, 2 years ago.
What is the penalty if Alphagen Systems 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 Alphagen Systems 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.