- Companies
- Plumbers and heating engineers
- Edinburgh
- Alan Kinghorn & Son Plumbing & Heating Ltd
Alan Kinghorn & Son Plumbing & Heating Ltd
- Company number
- SC527945
- Incorporated
- 25 Feb 201610 years trading
- Registered office
- 81 Moredun Park Gardens, Edinburgh, EH17 7LQ
- Nature of business
- Plumbing, heat and air-conditioning installation
Alan Kinghorn & Son Plumbing & Heating Ltd is a 10-year-old private limited company registered in Edinburgh, company number SC527945, one of 176 plumbing and heating companies in Edinburgh. Its next accounts are due at Companies House on 31 December 2026, and the CT600 for the period to 31 March 2026 is due at HMRC on 31 March 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 £27K (+248.4%) on the year before, to £38K.
- Net assets rose in 7 of 9 year-on-year comparisons on record.
- Current assets of £73K against £22K owed within a year: 3.4 times cover.
- 6 employees on average during the year.
- 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 Mar 2025 | £38K | £73K | £22K | 6 | |
| 31 Mar 2024 | £11K | £62K | £29K | 6 | |
| 31 Mar 2023 | -£36K | £18K | £33K | 4 | |
| 31 Mar 2022 | £19K | £61K | £41K | 5 | |
| 31 Mar 2021 | £15K | £34K | £72K | 5 | |
| 31 Mar 2020 | £7,939 | £4,414 | £15K | 4 | |
| 31 Mar 2019 | -£2,191 | -£5,849 | £25K | 4 | |
| 31 Mar 2018 | -£6,366 | -£14K | £31K | 4 | |
| 31 Mar 2017 | £6,001 | £24K | £60K | ||
| 31 Mar 2016 | £2 | £2 |
Who runs and owns Alan Kinghorn & Son Plumbing & Heating Ltd
From the Companies House register. Individuals are shown by initials only; the full register is on Companies House.
Officer
| Name | Role | Appointed |
|---|---|---|
| A*** K*** | Director | Feb 2016 |
1 former officer
| Name | Role | Appointed | Left |
|---|---|---|---|
| R*** K*** | Director | Feb 2016 | Jan 2017 |
People with significant control (2)
Where Alan Kinghorn & Son Plumbing & Heating Ltd is registered
The registered office is in Edinburgh (EH17), in the City of Edinburgh local authority area, Scotland. Show EH17 7LQ on a map.
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- Ses Access & Rigging LtdSpecialist contractors
- Pidhirnyi Property & Construction LtdJoiners and carpenters
What happens if Alan Kinghorn & Son Plumbing & Heating 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 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jan 2027 to 31 Jan 2027 | £150 |
| 1 to 3 months late | 1 Feb 2027 to 31 Mar 2027 | £375 |
| 3 to 6 months late | 1 Apr 2027 to 30 Jun 2027 | £750 |
| More than 6 months late | From 1 Jul 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Apr 2027 | £200 |
| 3 months late | 30 Jun 2027 | another £200 |
| 6 months late | 30 Sep 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Mar 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
- SC527945
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 25 February 2016 (10 years ago)
- Registered office
- 81 Moredun Park Gardens, Edinburgh, EH17 7LQ
- Nature of business
- 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 2025
- Last confirmation statement
- 24 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 Edinburgh
Other active plumbing and heating companies registered in Edinburgh.
- Allns Plumbing & Heating Ltd2024
- Amg Mechanical Limited2016
- Aspire Trade Services Limited2015
- Aurora Heating Limited2011
- Av Gas Ltd2020
- B2B Sales Limited2019
- Batten Gas Services Ltd2021
- Beyond the Level Limited2023
All plumbing and heating companies in Edinburgh · All trades in Edinburgh · Plumbers and heating engineers across the UK
Frequently asked questions
When are Alan Kinghorn & Son Plumbing & Heating Ltd's accounts due?
Alan Kinghorn & Son Plumbing & Heating Ltd's next accounts are due at Companies House by 31 December 2026 (in 79 days), covering the period to 31 March 2026.
When is Alan Kinghorn & Son Plumbing & Heating Ltd's CT600 due?
The CT600 for the period to 31 March 2026 is due at HMRC by 31 March 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 January 2027.
Is Alan Kinghorn & Son Plumbing & Heating Ltd still trading?
Alan Kinghorn & Son Plumbing & Heating 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 Alan Kinghorn & Son Plumbing & Heating Ltd do?
Alan Kinghorn & Son Plumbing & Heating Ltd is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is Alan Kinghorn & Son Plumbing & Heating Ltd?
Alan Kinghorn & Son Plumbing & Heating Ltd was incorporated on 25 February 2016, 10 years ago.
Who runs Alan Kinghorn & Son Plumbing & Heating Ltd?
Alan Kinghorn & Son Plumbing & Heating Ltd has 1 active director, the longest-serving appointed in Feb 2016. Their names and service addresses are on the Companies House register.
Who owns Alan Kinghorn & Son Plumbing & Heating Ltd?
2 people or companies have significant control of Alan Kinghorn & Son Plumbing & Heating Ltd: an individual (owns 50% to 75% of the shares); an individual (owns 50% to 75% of the shares).
What is the penalty if Alan Kinghorn & Son Plumbing & Heating 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 Alan Kinghorn & Son Plumbing & Heating 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.