- Companies
- Plumbers and heating engineers
- Fareham
- JDB Mechanical Ltd
JDB Mechanical Ltd
- Company number
- 12449908
- Incorporated
- 7 Feb 20206 years trading
- Registered office
- 16 Normandy Road, Fareham, PO14 1FJ
- Nature of business
- Plumbing, heat and air-conditioning installation
JDB Mechanical Ltd is a 6-year-old private limited company registered in Fareham, company number 12449908, one of 119 plumbing and heating companies in Fareham. Its next accounts are due at Companies House on 30 November 2026, and the CT600 for the period to 28 February 2026 is due at HMRC on 28 February 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 JDB 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 down £13K on the year before, to -£13K.
- Net assets rose in 1 of 4 year-on-year comparisons on record.
- Current assets of £153K against £123K owed within a year: 1.3 times cover.
- 3 employees on average during the year.
- Balance sheets on record for 5 years, 2021 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 28 Feb 2025 | -£13K | £1,934 | £153K | £123K | 3 |
| 29 Feb 2024 | £179 | £4,706 | £107K | £93K | 3 |
| 28 Feb 2023 | £183 | £6,272 | £60K | £46K | 3 |
| 28 Feb 2022 | £116 | £30K | £67K | £47K | 3 |
| 28 Feb 2021 | £122 | £43K | £76K | £56K | 2 |
Where JDB Mechanical Ltd is registered
The registered office is in Fareham (PO14), in the Fareham local authority area, South East. Show PO14 1FJ on a map.
Other trade companies in PO14
- Conifer Rise LimitedProperty developers
- S C Metters Hardscapes LimitedLandscapers and gardeners
- Calms Developments LtdProperty developers
- Solent Plumbing and Heating LtdBuilders
- Ark Home Technologies LtdElectricians
- Nature’S Touch Cleaning Services LimitedCleaning companies
- Prime Build South LtdFinishing trades
- Yoemans Project LtdProperty developers
What happens if JDB 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 30 November 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Dec 2026 to 31 Dec 2026 | £150 |
| 1 to 3 months late | 1 Jan 2027 to 28 Feb 2027 | £375 |
| 3 to 6 months late | 1 Mar 2027 to 31 May 2027 | £750 |
| More than 6 months late | From 1 Jun 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Mar 2027 | £200 |
| 3 months late | 28 May 2027 | another £200 |
| 6 months late | 28 Aug 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 28 Feb 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
- 12449908
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 7 February 2020 (6 years ago)
- Registered office
- 16 Normandy Road, Fareham, PO14 1FJ
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 29 February (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 28 February 2025
- Last confirmation statement
- 6 February 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 Fareham
Other active plumbing and heating companies registered in Fareham.
- Jeff Bodle Plumbing Services Ltd2012
- Jigsaw Commercial Plumbing Limited2026
- Jigsaw Plumbing & Gas Limited2018
- Jmurphyplumbing Ltd2025
- JNG Services Ltd2024
- Joshua Haynes Heating & Plumbing Services Limited2022
- Le Heating Ltd2020
- Lewtham Engineering Ltd2012
All plumbing and heating companies in Fareham · All trades in Fareham · Plumbers and heating engineers across the UK
Frequently asked questions
When are JDB Mechanical Ltd's accounts due?
JDB Mechanical Ltd's next accounts are due at Companies House by 30 November 2026 (in 49 days), covering the period to 28 February 2026.
When is JDB Mechanical Ltd's CT600 due?
The CT600 for the period to 28 February 2026 is due at HMRC by 28 February 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 December 2026.
Is JDB Mechanical Ltd still trading?
JDB 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 JDB Mechanical Ltd do?
JDB Mechanical Ltd is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is JDB Mechanical Ltd?
JDB Mechanical Ltd was incorporated on 7 February 2020, 6 years ago.
What is the penalty if JDB 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 JDB 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.