- Companies
- Installers
- Birmingham
- A1 Installers Ltd
A1 Installers Ltd
- Company number
- 15754505
- Incorporated
- 1 Jun 20242 years trading
- Registered office
- 133 Medina Road, Sparkhill, Birmingham, West Midlands, B11 3SB
- Nature of business
- Other construction installation
A1 Installers Ltd is a 2-year-old private limited company registered in Birmingham, company number 15754505, one of 301 installation companies (insulation, lifts, shutters and similar) in Birmingham. Companies House shows its accounts as overdue: they were due on 1 June 2026.
Key dates
This company has not filed accounts yet. First accounts are due 21 months after incorporation, and the first period can run longer than a year.
Is this your company?
File the first 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 A1 Installers LtdOr 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.
Where A1 Installers Ltd is registered
The registered office is in Birmingham (B11), in the Birmingham local authority area, West Midlands. Show B11 3SB on a map.
Other trade companies in B11
- Fa Heating Experts LtdPlumbers and heating engineers
- Westinghouse Electrical Testing LtdElectricians
- Alt Light Future LimitedElectricians
- Grafton Tyres LtdMotor traders
- My Auto Hub LtdMotor traders
- Abz Electrica LtdCivil engineering
- SSH Motorz Market LtdMotor traders
- Urban Outkitterz LimitedMechanics and garages
What happens if A1 Installers 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 | 2 Jun 2026 to 1 Jul 2026 | £150 |
| 1 to 3 months late | 2 Jul 2026 to 1 Sep 2026 | £375 |
| 3 to 6 months late | 2 Sep 2026 to 1 Dec 2026 | £750 |
| More than 6 months late | From 2 Dec 2026 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jul 2026 | £200 |
| 3 months late | 30 Sep 2026 | another £200 |
| 6 months late | 30 Dec 2026 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Jun 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
- 15754505
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 1 June 2024 (2 years ago)
- Registered office
- 133 Medina Road, Sparkhill, Birmingham, West Midlands, B11 3SB
- Nature of business
- Other construction installation (SIC 43290)
- Year end
- 30 June (accounting reference date)
- Accounts type
- No accounts filed yet
- Last confirmation statement
- 13 October 2025
Filing notes for installation companies (insulation, lifts, shutters and similar)
Installation companies (insulation, lifts, shutters, solar and similar) often buy stock and equipment up front, so stock at the year end and capital allowances both affect the tax bill.
Similar companies in Birmingham
Other active installation companies (insulation, lifts, shutters and similar) registered in Birmingham.
- A1 Top Job Maitenance Ltd2020
- Abafix Ltd2026
- Abbasi,S Group Ltd2026
- Abdul H Construction Ltd2025
- Ac Installation Ltd2022
- Access Anchors Ltd2021
- Acclaimed Builders & Refurbishments Ltd2011
- Af-X Fireblocker (UK) Ltd2020
All installation companies (insulation, lifts, shutters and similar) in Birmingham · All trades in Birmingham · Installers across the UK
Frequently asked questions
When are A1 Installers Ltd's accounts due?
A1 Installers Ltd's accounts were due at Companies House on 1 June 2026 and the register shows them as overdue.
When is A1 Installers Ltd's CT600 due?
The first accounts cover more than 12 months, so there are two Company Tax Returns: one for the 12 months to 31 May 2025, due by 31 May 2026, and one for the period to 30 June 2025, due by 30 June 2026. Corporation tax is payable 9 months and 1 day after the end of each.
Is A1 Installers Ltd still trading?
A1 Installers 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 A1 Installers Ltd do?
A1 Installers Ltd is registered under Other construction installation (SIC 43290).
How old is A1 Installers Ltd?
A1 Installers Ltd was incorporated on 1 June 2024, 2 years ago.
What is the penalty if A1 Installers 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 A1 Installers 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.