- Companies
- Installers
- J.B.K. Engineering Ltd
J.B.K. Engineering Ltd
- Company number
- 04912728
- Incorporated
- 26 Sep 200323 years trading
- Registered office
- Gwynfynydd, Llanwnog, Caersws, Powys, SY17 5PD
- Nature of business
- Other construction installation
J.B.K. Engineering Ltd is a 23-year-old private limited company registered in Powys, company number 04912728, one of the UK's installation companies (insulation, lifts, shutters and similar). 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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Finances
From each year's balance sheet filed at Companies House. Small companies do not have to publish turnover or profit, so these are balance sheet figures.
- Net assets up £2,999 (+82%) on the year before, to -£660.
- Net assets rose in 3 of 9 year-on-year comparisons on record.
- Current assets of £50K against £46K owed within a year: 1.1 times cover.
- No employees reported for the latest year (directors are often not counted as employees).
- Balance sheets on record for 10 years, 2016 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Dec 2025 | -£660 | £22K | £50K | £46K | 0 |
| 31 Dec 2024 | -£3,659 | £31K | £55K | £50K | 3 |
| 31 Dec 2023 | -£9,030 | £36K | £61K | £67K | 3 |
| 31 Dec 2022 | £3,286 | £66K | £79K | £76K | 3 |
| 31 Dec 2021 | £6,284 | £50K | £78K | £78K | 3 |
| 31 Dec 2020 | £15K | £72K | £102K | £79K | 3 |
| 31 Dec 2019 | £33K | £96K | £137K | £124K | 3 |
| 31 Dec 2018 | £28K | £30K | £125K | £122K | 3 |
| 31 Dec 2017 | £39K | £26K | £134K | £128K | |
| 31 Dec 2016 | £47K | £46K | £159K | £143K | 1 |
Where J.B.K. Engineering Ltd is registered
The registered office is in Powys (SY17), in the Powys local authority area, Wales. Show SY17 5PD on a map.
Other trade companies in SY17
- Multibrand Renewables UK LimitedMachinery repair and installation
- Interwind Renewable Services LtdMachinery repair and installation
- Geovert Access LtdCivil engineering
- Davies Services LimitedBuilders
- Jones Bro's & Sons LtdFinishing trades
- Counsell Commercial LtdMechanics and garages
- Renlec LtdElectricians
- J G & P LimitedBuilders
What happens if J.B.K. Engineering 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
- 04912728
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 26 September 2003 (23 years ago)
- Registered office
- Gwynfynydd, Llanwnog, Caersws, Powys, SY17 5PD
- Nature of business
- Other construction installation (SIC 43290)
- Year end
- 31 December (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 December 2025
- Last confirmation statement
- 26 September 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
Other active installation companies (insulation, lifts, shutters and similar).
Frequently asked questions
When are J.B.K. Engineering Ltd's accounts due?
J.B.K. Engineering Ltd's next accounts are due at Companies House by 30 September 2027 (in 353 days), covering the period to 31 December 2026.
When is J.B.K. Engineering 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 J.B.K. Engineering Ltd still trading?
J.B.K. Engineering Ltd is listed as active on the Companies House register (checked 12 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 J.B.K. Engineering Ltd do?
J.B.K. Engineering Ltd is registered under Other construction installation (SIC 43290).
How old is J.B.K. Engineering Ltd?
J.B.K. Engineering Ltd was incorporated on 26 September 2003, 23 years ago.
What is the penalty if J.B.K. Engineering 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 J.B.K. Engineering Ltd on Companies House for filed documents, officers and the full history.
Based on the Companies House register (snapshot 1 Oct 2026, rechecked 12 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.