- Companies
- Electricians
- Merthyr Tydfil
- Anvil Electrical and Security Ltd
Anvil Electrical and Security Ltd
- Company number
- 15140095
- Incorporated
- 15 Sep 20233 years trading
- Registered office
- 24 Twynygarreg, Treharris, Merthyr Tydfil, Mid Glamorgan, CF46 5RL
- Nature of business
- Electrical installation
Anvil Electrical and Security Ltd is a 3-year-old private limited company registered in Merthyr Tydfil, company number 15140095, one of 37 electrical contractors in Merthyr Tydfil. Companies House shows its accounts as overdue: they were due on 30 June 2026.
Key dates
Worked out from the year end and filing history on the Companies House register.
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Where Anvil Electrical and Security Ltd is registered
The registered office is in Merthyr Tydfil (CF46), in the Merthyr Tydfil local authority area, Wales. Show CF46 5RL on a map.
Other trade companies in CF46
- Dragon Water Services LtdPlumbers and heating engineers
- All Cleaned Up FM LtdCleaning companies
- Stadeyn Civils & Groundworks LtdCivil engineering
- JDP Plumbing & Property Maintenance LtdBuilders
- Alpha Exterior Solutions LtdCleaning companies
- Foreman's Tyres LimitedMotor traders
- Fox Electrical and Building Maintenance LtdBuilders
- L M Hydraulic Services LimitedMachinery repair and installation
Also registered at this address
1 other company uses the same registered office as Anvil Electrical and Security Ltd.
- Poppybuild Developments LtdProperty developers
What happens if Anvil Electrical and Security Ltd files late
If the accounts reach Companies House today, the late filing penalty is £750 (£1,500 if last year's accounts were also late). It rises at each step below.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jul 2026 to 31 Jul 2026 | £150 |
| 1 to 3 months late | 1 Aug 2026 to 30 Sep 2026 | £375 |
| 3 to 6 months late | 1 Oct 2026 to 31 Dec 2026 | £750 |
| More than 6 months late | From 1 Jan 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Oct 2026 | £200 |
| 3 months late | 30 Dec 2026 | another £200 |
| 6 months late | 30 Mar 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Sep 2027 | 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
- 15140095
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 15 September 2023 (3 years ago)
- Registered office
- 24 Twynygarreg, Treharris, Merthyr Tydfil, Mid Glamorgan, CF46 5RL
- Nature of business
- Electrical installation (SIC 43210)
- Year end
- 30 September (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 30 September 2024
- Last confirmation statement
- 14 September 2025
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 Merthyr Tydfil
Other active electrical contractors registered in Merthyr Tydfil.
- Aurora B Solar Ltd2024
- Axis Electrical Services Ltd2026
- C.Mak Electrical Limited2018
- Cleaver Limited2014
- Danny Electrical Services Limited2018
- Ec-Ec Fiber Ltd2023
- Ecas Systems Limited2004
- Efs Systems (UK) Ltd2012
All electrical contractors in Merthyr Tydfil · All trades in Merthyr Tydfil · Electricians across the UK
Frequently asked questions
When are Anvil Electrical and Security Ltd's accounts due?
Anvil Electrical and Security Ltd's accounts were due at Companies House on 30 June 2026 and the register shows them as overdue.
When is Anvil Electrical and Security Ltd's CT600 due?
The CT600 for the period to 30 September 2025 is due at HMRC by 30 September 2026, 12 months after the period end. The corporation tax itself is payable earlier, by 1 July 2026.
Is Anvil Electrical and Security Ltd still trading?
Anvil Electrical and Security Ltd is listed as active on the Companies House register (checked 13 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 Anvil Electrical and Security Ltd do?
Anvil Electrical and Security Ltd is registered under Electrical installation (SIC 43210).
How old is Anvil Electrical and Security Ltd?
Anvil Electrical and Security Ltd was incorporated on 15 September 2023, 3 years ago.
What is the penalty if Anvil Electrical and Security Ltd 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 Anvil Electrical and Security Ltd on Companies House for filed documents, officers and the full history.
Based on the Companies House register (snapshot 1 Oct 2026, rechecked 13 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.