- Companies
- Electricians
- Newcastle
- J & K Mechanical Ltd
J & K Mechanical Ltd
- Company number
- 11756603
- Incorporated
- 8 Jan 20197 years trading
- Registered office
- Unit 9 Newcastle Enterprise Centre High Street, Knutton, Newcastle, ST5 6BX
- Nature of business
- Electrical installation; Plumbing, heat and air-conditioning installation
J & K Mechanical Ltd is a 7-year-old private limited company registered in Newcastle, company number 11756603, one of 48 electrical contractors in Newcastle. Its next accounts are due at Companies House on 31 December 2027, and the CT600 for the period to 31 March 2027 is due at HMRC on 31 March 2028.
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 £9,361 (+5%) on the year before, to £196K.
- Net assets rose in 5 of 7 year-on-year comparisons on record.
- Current assets of £295K against £154K owed within a year: 1.9 times cover.
- 8 employees on average, up from 7 the year before.
- Balance sheets on record for 8 years, 2019 to 2026.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Mar 2026 | £196K | £295K | £154K | 8 | |
| 31 Mar 2025 | £186K | £293K | £152K | 7 | |
| 31 Mar 2024 | £140K | £231K | £142K | 7 | |
| 31 Mar 2023 | £148K | £268K | £192K | 6 | |
| 31 Mar 2022 | £82K | £111K | £189K | £137K | 6 |
| 31 Mar 2021 | £84K | £54K | £160K | £109K | 4 |
| 31 Mar 2020 | £60K | £39K | £106K | £70K | 4 |
| 31 Mar 2019 | £20 | £20 |
Who runs and owns J & K Mechanical Ltd
From the Companies House register. Individuals are shown by initials only; the full register is on Companies House.
Officers (2)
| Name | Role | Appointed |
|---|---|---|
| J*** M*** | Director | Jan 2019 |
| K*** N*** | Director | Jan 2019 |
People with significant control (2)
Public contracts won
J & K Mechanical Ltd has 2 public sector contract awards on record (2024). Source: Contracts Finder and Find a Tender award notices. For all of them the published figure is a shared or multi-year ceiling (a framework place, a multi-supplier award, or more than a small company could hold alone), so no value is shown. These were matched by the company's exact name because the notice gave no company number.
Awards by year
Main buyers
- Leeds and York Partnership NHS Foundation Trust, trading as North of England NHS Commercial Procurement Collaborative ("NOE CPC")1 award
- North of England Commercial Procurement Collaborative1 award
| Buyer | Contract | Value | Awarded |
|---|---|---|---|
| Leeds and York Partnership NHS Foundation Trust, trading as North of England NHS Commercial Procurement Collaborative ("NOE CPC") | NOE CPC Specialist Estates Engineering & Maintenance Services (Hard FM) | Ceiling, not shown | 2 Aug 2024 |
| North of England Commercial Procurement Collaborative | NOE CPC Specialist Estates Engineering & Maintenance Services (Hard FM) | Ceiling, not shown | 2 Aug 2024 |
Where J & K Mechanical Ltd is registered
The registered office is in Newcastle (ST5), in the Newcastle-under-Lyme local authority area, West Midlands. Show ST5 6BX on a map.
Other trade companies in ST5
- Stonesmith Construction LtdSpecialist contractors
- Restore Property Group LimitedInstallers
- DT Mobile Engineering LtdMechanics and garages
- Woolliscroft Homes (Mow Cop) LimitedBuilders
- Brazier Construction (Stoke on Trent) New LimitedFinishing trades
- Cav-Ex Solutions LtdSpecialist contractors
- Matrix Key Solutions LimitedMechanics and garages
- NW Ground Solutions LtdCivil engineering
What happens if J & K Mechanical 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 31 December 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jan 2028 to 31 Jan 2028 | £150 |
| 1 to 3 months late | 1 Feb 2028 to 31 Mar 2028 | £375 |
| 3 to 6 months late | 1 Apr 2028 to 30 Jun 2028 | £750 |
| More than 6 months late | From 1 Jul 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Apr 2028 | £200 |
| 3 months late | 30 Jun 2028 | another £200 |
| 6 months late | 30 Sep 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Mar 2029 | 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
- 11756603
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 8 January 2019 (7 years ago)
- Registered office
- Unit 9 Newcastle Enterprise Centre High Street, Knutton, Newcastle, ST5 6BX
- Nature of business
- Electrical installation (SIC 43210)
Plumbing, heat and air-conditioning installation (SIC 43220) - Year end
- 31 March (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 March 2026
- Last confirmation statement
- 5 May 2026
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 Newcastle
Other active electrical contractors registered in Newcastle.
- J H Elec Limited2013
- KD Holmes Services Ltd2017
- KHG Security Limited2003
- Knox Installations Ltd2013
- Kon Services (N.I) Ltd2025
- L26 Building Maintenance Ltd2025
- Laighean Mep Installations Ltd2025
- Matthew Toner Electrics Ltd2024
All electrical contractors in Newcastle · All trades in Newcastle · Electricians across the UK
Frequently asked questions
When are J & K Mechanical Ltd's accounts due?
J & K Mechanical Ltd's next accounts are due at Companies House by 31 December 2027 (in 444 days), covering the period to 31 March 2027.
When is J & K Mechanical Ltd's CT600 due?
The CT600 for the period to 31 March 2027 is due at HMRC by 31 March 2028, 12 months after the period end. The corporation tax itself is payable earlier, by 1 January 2028.
Is J & K Mechanical Ltd still trading?
J & K Mechanical 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 J & K Mechanical Ltd do?
J & K Mechanical Ltd is registered under Electrical installation (SIC 43210); Plumbing, heat and air-conditioning installation (SIC 43220).
How old is J & K Mechanical Ltd?
J & K Mechanical Ltd was incorporated on 8 January 2019, 7 years ago.
Who runs J & K Mechanical Ltd?
J & K Mechanical Ltd has 2 active directors, the longest-serving appointed in Jan 2019. Their names and service addresses are on the Companies House register.
Who owns J & K Mechanical Ltd?
2 people or companies have significant control of J & K Mechanical Ltd: an individual (owns 25% to 50% of the shares); an individual (owns 25% to 50% of the shares).
Has J & K Mechanical Ltd won public sector contracts?
Yes. J & K Mechanical Ltd has 2 contract awards from public bodies on Contracts Finder and Find a Tender, most recently from Leeds and York Partnership NHS Foundation Trust, trading as North of England NHS Commercial Procurement Collaborative ("NOE CPC").
What is the penalty if J & K Mechanical 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 & K Mechanical 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.