- Companies
- Plumbers and heating engineers
- Doncaster
- JBW Mechanical Ltd
JBW Mechanical Ltd
- Company number
- 12742264
- Incorporated
- 14 Jul 20206 years trading
- Registered office
- Montracon Ltd Office 35, Carr Hill, Doncaster, South Yorkshire, DN4 8DE
- Nature of business
- Plumbing, heat and air-conditioning installation
JBW Mechanical Ltd is a 6-year-old private limited company registered in Doncaster, company number 12742264, one of 150 plumbing and heating companies in Doncaster. Its next accounts are due at Companies House on 31 October 2026, and the CT600 for the period to 31 January 2026 is due at HMRC on 31 January 2027.
Key dates
Worked out from the year end and filing history on the Companies House register.
Is this your company?
File the 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 JBW Mechanical 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.
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 £14K (+17.2%) on the year before, to £93K.
- Net assets rose in 3 of 3 year-on-year comparisons on record.
- Current assets of £144K against £69K owed within a year: 2.1 times cover.
- 4 employees on average, up from 3 the year before.
- Balance sheets on record for 4 years, 2021 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Jan 2025 | £93K | £57K | £144K | £69K | 4 |
| 31 Jan 2024 | £79K | £125K | £63K | 3 | |
| 31 Jan 2023 | £49K | £69K | £41K | 4 | |
| 31 Jul 2021 | £40K | £74K | £54K | 4 |
Who runs and owns JBW Mechanical Ltd
From the Companies House register. Individuals are shown by initials only; the full register is on Companies House.
Officers (3)
| Name | Role | Appointed |
|---|---|---|
| C*** B*** | Director | Jul 2020 |
| R*** J*** | Director | Jul 2020 |
| T*** W*** | Director | Jul 2020 |
People with significant control (3)
Where JBW Mechanical Ltd is registered
The registered office is in Doncaster (DN4), in the Doncaster local authority area, Yorkshire and The Humber. Show DN4 8DE on a map.
Other trade companies in DN4
- Krishtal Cleaning LtdCleaning companies
- Regional Services & Maintenance LtdElectricians
- Kristan Carr E&M LimitedElectricians
- Brookes Home and Heating LtdBuilders
- 1ST Ground Construction Management Services LtdProperty developers
- Speedy Transport Doncaster LtdMechanics and garages
- Team Clean Group Commercial LtdCleaning companies
- Veridian Guard LtdInstallers
What happens if JBW 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 October 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Nov 2026 to 30 Nov 2026 | £150 |
| 1 to 3 months late | 1 Dec 2026 to 31 Jan 2027 | £375 |
| 3 to 6 months late | 1 Feb 2027 to 30 Apr 2027 | £750 |
| More than 6 months late | From 1 May 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Feb 2027 | £200 |
| 3 months late | 30 Apr 2027 | another £200 |
| 6 months late | 31 Jul 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Jan 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
- 12742264
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 14 July 2020 (6 years ago)
- Registered office
- Montracon Ltd Office 35, Carr Hill, Doncaster, South Yorkshire, DN4 8DE
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 31 January (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 January 2025
- Last confirmation statement
- 13 July 2026
Filing notes for plumbing and heating companies
Plumbing and heating companies frequently work under CIS for main contractors and also directly for homeowners, so turnover can mix CIS and non-CIS income.
Similar companies in Doncaster
Other active plumbing and heating companies registered in Doncaster.
- JL Solar Ltd2020
- JMS Mechanical Services (Yorkshire) Ltd2012
- JTP Plumbing & Heating Doncaster Ltd2023
- K G Doncaster Plumbing Ltd2021
- K Green Services Limited2019
- Kassgas Limited2019
- KB Mechanical Ltd2020
- Kelly's Boilers & Gas Services Ltd2026
All plumbing and heating companies in Doncaster · All trades in Doncaster · Plumbers and heating engineers across the UK
Frequently asked questions
When are JBW Mechanical Ltd's accounts due?
JBW Mechanical Ltd's next accounts are due at Companies House by 31 October 2026 (in 18 days), covering the period to 31 January 2026.
When is JBW Mechanical Ltd's CT600 due?
The CT600 for the period to 31 January 2026 is due at HMRC by 31 January 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 November 2026.
Is JBW Mechanical Ltd still trading?
JBW 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 JBW Mechanical Ltd do?
JBW Mechanical Ltd is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is JBW Mechanical Ltd?
JBW Mechanical Ltd was incorporated on 14 July 2020, 6 years ago.
Who runs JBW Mechanical Ltd?
JBW Mechanical Ltd has 3 active directors, the longest-serving appointed in Jul 2020. Their names and service addresses are on the Companies House register.
Who owns JBW Mechanical Ltd?
3 people or companies have significant control of JBW Mechanical Ltd: an individual (owns 25% to 50% of the shares); an individual (owns 25% to 50% of the shares); an individual (owns 25% to 50% of the shares).
What is the penalty if JBW 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 JBW 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.