- Companies
- Mechanics and garages
- Mexborough
- Aj Lock and Key Ltd
Aj Lock and Key Ltd
- Company number
- 16126277
- Incorporated
- 9 Dec 20241 year trading
- Registered office
- 76 Brookfield Avenue, Swinton, Mexborough, S64 8LH
- Nature of business
- Maintenance and repair of motor vehicles
Aj Lock and Key Ltd is a 1-year-old private limited company registered in Mexborough, company number 16126277, one of 21 vehicle repair garages in Mexborough. Its next accounts are due at Companies House on 30 September 2027, and the CT600 for the period to 31 December 2026 is due at HMRC on 31 December 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 31 December 2025, as filed at Companies House. Negative net assets mean the company owed more than it owned at that date.
Where Aj Lock and Key Ltd is registered
The registered office is in Mexborough (S64), in the Rotherham local authority area, Yorkshire and The Humber. Show S64 8LH on a map.
Other trade companies in S64
- SB’S Home Improvements LtdRepair services
- S J Croome Construction LtdInstallers
- Sourc LtdElectricians
- Arc Building & Interiors LtdInstallers
- 3P Project Solutions LimitedSpecialist contractors
- A&H Tyres LtdMotor traders
- Northdale Construction LtdBuilders
- A.J.W Plumbing & Heating Northern LtdPlumbers and heating engineers
Also registered at this address
1 other company uses the same registered office as Aj Lock and Key Ltd.
- Aj Car and Commercial LtdMechanics and garages
What happens if Aj Lock and Key Ltd 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 30 September 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Oct 2027 to 31 Oct 2027 | £150 |
| 1 to 3 months late | 1 Nov 2027 to 31 Dec 2027 | £375 |
| 3 to 6 months late | 1 Jan 2028 to 31 Mar 2028 | £750 |
| More than 6 months late | From 1 Apr 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jan 2028 | £200 |
| 3 months late | 31 Mar 2028 | another £200 |
| 6 months late | 30 Jun 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Dec 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
- 16126277
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 9 December 2024 (1 year ago)
- Registered office
- 76 Brookfield Avenue, Swinton, Mexborough, S64 8LH
- Nature of business
- Maintenance and repair of motor vehicles (SIC 45200)
- Year end
- 31 December (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 December 2025
- Last confirmation statement
- 8 December 2025
Filing notes for vehicle repair garages
Garages hold parts stock and often own diagnostic equipment and ramps, which qualify for capital allowances.
Similar companies in Mexborough
Other active vehicle repair garages registered in Mexborough.
- Auto-Motiv Sales Limited2025
- B C Commercial Services Limited2018
- Central Repair Centre Limited2014
- Church Hall Garage Limited2015
- Cosmic Colours Limited2007
- D H Auto Services Limited2008
- Force Motorsport Limited1995
- G T Tyres Servicing & MOT Centre Limited2021
All vehicle repair garages in Mexborough · All trades in Mexborough · Mechanics and garages across the UK
Frequently asked questions
When are Aj Lock and Key Ltd's accounts due?
Aj Lock and Key Ltd's next accounts are due at Companies House by 30 September 2027 (in 352 days), covering the period to 31 December 2026.
When is Aj Lock and Key Ltd's CT600 due?
The CT600 for the period to 31 December 2026 is due at HMRC by 31 December 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 October 2027.
Is Aj Lock and Key Ltd still trading?
Aj Lock and Key Ltd 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 Aj Lock and Key Ltd do?
Aj Lock and Key Ltd is registered under Maintenance and repair of motor vehicles (SIC 45200).
How old is Aj Lock and Key Ltd?
Aj Lock and Key Ltd was incorporated on 9 December 2024, 1 year ago.
What is the penalty if Aj Lock and Key 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 Aj Lock and Key Ltd 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.