- Companies
- Machinery repair and installation
- Dumbarton
- Joseph Harkom & Son Gunmakers Limited
Joseph Harkom & Son Gunmakers Limited
- Company number
- SC869039
- Incorporated
- 5 Nov 2025
- Registered office
- Strathleven House, Vale of Leven Industrial Estate, Dumbarton, G82 3PD
- Nature of business
- Repair of other equipment
Joseph Harkom & Son Gunmakers Limited is a newly incorporated private limited company registered in Dumbarton, company number SC869039, one of 10 machinery repair and installation companies in Dumbarton. Its next accounts are due at Companies House on 5 August 2027, and its first CT600 is due at HMRC on 4 November 2027.
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.
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Where Joseph Harkom & Son Gunmakers Limited is registered
The registered office is in Dumbarton (G82), in the West Dunbartonshire local authority area, Scotland. Show G82 3PD on a map.
Other trade companies in G82
- Mintedcs LtdRoofers
- RT Electrical Services Scotland LtdElectricians
- Central Heating Scotland LtdPlumbers and heating engineers
- Carberry R.H LtdMachinery repair and installation
- RGM Window Cleaning LimitedCleaning companies
- Maxwell's Air Conditioning LtdPlumbers and heating engineers
- Plasterforce LtdPlasterers
- NCL Engineering LtdCivil engineering
Also registered at this address
1 other company uses the same registered office as Joseph Harkom & Son Gunmakers Limited.
- Amphos Icp LimitedElectricians
What happens if Joseph Harkom & Son Gunmakers 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 5 August 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 6 Aug 2027 to 5 Sep 2027 | £150 |
| 1 to 3 months late | 6 Sep 2027 to 5 Nov 2027 | £375 |
| 3 to 6 months late | 6 Nov 2027 to 5 Feb 2028 | £750 |
| More than 6 months late | From 6 Feb 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Dec 2027 | £200 |
| 3 months late | 29 Feb 2028 | another £200 |
| 6 months late | 30 May 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Nov 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
- SC869039
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 5 November 2025
- Registered office
- Strathleven House, Vale of Leven Industrial Estate, Dumbarton, G82 3PD
- Nature of business
- Repair of other equipment (SIC 33190)
- Year end
- 30 November (accounting reference date)
- Accounts type
- No accounts filed yet
Filing notes for machinery repair and installation companies
Machinery repair and installation companies often carry parts stock and specialist tools, and many work on contracts that span the year end.
Similar companies in Dumbarton
Other active machinery repair and installation companies registered in Dumbarton.
- Scotechnics Limited1994
- Wallace Power Services Ltd2011
- 110 (UK) Limited1993
- Ally Mac Mechanical Services Ltd2014
- Carberry R.H Ltd2026
- Elevesc Ltd2025
- Generator Technician Services Ltd2025
- Harper Generator Services Ltd2013
All machinery repair and installation companies in Dumbarton · All trades in Dumbarton · Machinery repair and installation across the UK
Frequently asked questions
When are Joseph Harkom & Son Gunmakers Limited's accounts due?
Joseph Harkom & Son Gunmakers Limited's next accounts are due at Companies House by 5 August 2027 (in 296 days), covering the period to 30 November 2026.
When is Joseph Harkom & Son Gunmakers Limited's CT600 due?
The first accounts cover more than 12 months, so there are two Company Tax Returns: one for the 12 months to 4 November 2026, due by 4 November 2027, and one for the period to 30 November 2026, due by 30 November 2027. Corporation tax is payable 9 months and 1 day after the end of each.
Is Joseph Harkom & Son Gunmakers Limited still trading?
Joseph Harkom & Son Gunmakers 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 Joseph Harkom & Son Gunmakers Limited do?
Joseph Harkom & Son Gunmakers Limited is registered under Repair of other equipment (SIC 33190).
How old is Joseph Harkom & Son Gunmakers Limited?
Joseph Harkom & Son Gunmakers Limited was incorporated on 5 November 2025, less than a year ago.
What is the penalty if Joseph Harkom & Son Gunmakers 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 Joseph Harkom & Son Gunmakers 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.