- Companies
- Plumbers and heating engineers
- Dunfermline
- J Duncan PHB Ltd
J Duncan PHB Ltd
- Company number
- SC544521
- Incorporated
- 5 Sep 201610 years trading
- Registered office
- 7 Greenacres, Kingseat, Dunfermline, KY12 0RW
- Nature of business
- Plumbing, heat and air-conditioning installation
J Duncan PHB Ltd is a 10-year-old private limited company registered in Dunfermline, company number SC544521, one of 35 plumbing and heating companies in Dunfermline. Its next accounts are due at Companies House on 30 June 2027, and the CT600 for the period to 30 September 2026 is due at HMRC on 30 September 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 £2,616 (+36.3%) on the year before, to £9,819.
- Net assets rose in 7 of 8 year-on-year comparisons on record.
- Current assets of £8,647 against £2,122 owed within a year: 4.1 times cover.
- 2 employees on average, up from 1 the year before.
- Balance sheets on record for 9 years, 2017 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 30 Sep 2025 | £9,819 | £8,647 | £2,122 | 2 | |
| 30 Sep 2024 | £7,203 | £14K | £11K | 1 | |
| 30 Sep 2023 | £1,490 | £11K | £15K | 2 | |
| 30 Sep 2022 | £68 | £14K | £20K | 2 | |
| 30 Sep 2021 | £15 | £13K | £21K | 2 | |
| 30 Sep 2020 | £7,110 | £13K | £30K | 2 | |
| 30 Sep 2019 | £5,107 | £13K | £29K | 2 | |
| 30 Sep 2018 | £3,437 | £6,478 | £24K | ||
| 30 Sep 2017 | -£3,916 | £8,972 | £30K |
Where J Duncan PHB Ltd is registered
The registered office is in Dunfermline (KY12), in the Fife local authority area, Scotland. Show KY12 0RW on a map.
Other trade companies in KY12
- PL Automotive LimitedMechanics and garages
- Inchyra Motors LimitedMechanics and garages
- Signature Landscapes Scotland LtdGroundworks and demolition
- Aw Vehicle Welding and Restoration LtdMechanics and garages
- 506 Gas Services LimitedPlumbers and heating engineers
- Amerio Developments LimitedProperty developers
- Casserly Capital LtdProperty developers
- Opus Vera LtdPlumbers and heating engineers
What happens if J Duncan PHB 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 June 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jul 2027 to 31 Jul 2027 | £150 |
| 1 to 3 months late | 1 Aug 2027 to 30 Sep 2027 | £375 |
| 3 to 6 months late | 1 Oct 2027 to 31 Dec 2027 | £750 |
| More than 6 months late | From 1 Jan 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Oct 2027 | £200 |
| 3 months late | 30 Dec 2027 | another £200 |
| 6 months late | 30 Mar 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Sep 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
- SC544521
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 5 September 2016 (10 years ago)
- Registered office
- 7 Greenacres, Kingseat, Dunfermline, KY12 0RW
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 30 September (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 30 September 2025
- Last confirmation statement
- 5 September 2025
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 Dunfermline
Other active plumbing and heating companies registered in Dunfermline.
- Johnstone & Robertson Plumbing & Heating Services Ltd2013
- JRB Plumbing & Tiling Ltd2025
- KD Plumbing Heating and Bathrooms Ltd2016
- Kingdom Boilers Ltd2026
- McCallum Plumbing & Heating Ltd2025
- Opus Vera Ltd2026
- PC Plumbing & Heating Limited2004
- RGM Heating Ltd2020
All plumbing and heating companies in Dunfermline · All trades in Dunfermline · Plumbers and heating engineers across the UK
Frequently asked questions
When are J Duncan PHB Ltd's accounts due?
J Duncan PHB Ltd's next accounts are due at Companies House by 30 June 2027 (in 260 days), covering the period to 30 September 2026.
When is J Duncan PHB Ltd's CT600 due?
The CT600 for the period to 30 September 2026 is due at HMRC by 30 September 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 July 2027.
Is J Duncan PHB Ltd still trading?
J Duncan PHB 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 Duncan PHB Ltd do?
J Duncan PHB Ltd is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is J Duncan PHB Ltd?
J Duncan PHB Ltd was incorporated on 5 September 2016, 10 years ago.
What is the penalty if J Duncan PHB 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 Duncan PHB 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.