- Companies
- Plumbers and heating engineers
- East Kilbride
- J McMillan Gas Ltd
J McMillan Gas Ltd
- Company number
- SC742530
- Incorporated
- 26 Aug 20224 years trading
- Registered office
- 21 Beech Grove, East Kilbride, Glasgow, G75 9EA
- Nature of business
- Plumbing, heat and air-conditioning installation; Repair of household appliances and home and garden equipment
J McMillan Gas Ltd is a 4-year-old private limited company registered in East Kilbride, company number SC742530, one of 45 plumbing and heating companies in East Kilbride. Its next accounts are due at Companies House on 31 May 2027, and the CT600 for the period to 31 August 2026 is due at HMRC on 31 August 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 unchanged on the year before, at £1.
- Current assets of £6,834 against £10K owed within a year: 0.7 times cover.
- 1 employee on average during the year.
- Balance sheets on record for 3 years, 2023 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Aug 2025 | £1 | £6,834 | £10K | 1 | |
| 31 Aug 2024 | £1 | £5,145 | £4,536 | 1 | |
| 31 Aug 2023 | £1 | £1,847 | £1,914 | 1 |
Where J McMillan Gas Ltd is registered
The registered office is in East Kilbride (G75), in the South Lanarkshire local authority area, Scotland. Show G75 9EA on a map.
Other trade companies in G75
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- Restor8 LtdSpecialist contractors
- Lanrigg Developments LtdProperty developers
- Paul Corrigan Repair LtdMachinery repair and installation
- KSBL LtdBuilders
- DK Facilities Management LimitedFacilities management
- Fife Painters LtdRoofers
- Eden Technical Services LtdElectricians
What happens if J McMillan Gas 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 May 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jun 2027 to 30 Jun 2027 | £150 |
| 1 to 3 months late | 1 Jul 2027 to 31 Aug 2027 | £375 |
| 3 to 6 months late | 1 Sep 2027 to 30 Nov 2027 | £750 |
| More than 6 months late | From 1 Dec 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Sep 2027 | £200 |
| 3 months late | 30 Nov 2027 | another £200 |
| 6 months late | 29 Feb 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Aug 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
- SC742530
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 26 August 2022 (4 years ago)
- Registered office
- 21 Beech Grove, East Kilbride, Glasgow, G75 9EA
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
Repair of household appliances and home and garden equipment (SIC 95220) - Year end
- 31 August (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 August 2025
- Last confirmation statement
- 25 August 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 East Kilbride
Other active plumbing and heating companies registered in East Kilbride.
- JDS Multi Trade Ltd2021
- JMB Plumbing & Heating Services Ltd2023
- JSF Heating Services Ltd2023
- KPF Plumbing & Heating Ltd2020
- Livingaire Air Conditioning Limited2019
- Matthew Graham Plumbing & Heating Limited2024
- McMurdo Plumbing and Heating Limited2018
- MG Precision Plumbing Ltd2025
All plumbing and heating companies in East Kilbride · All trades in East Kilbride · Plumbers and heating engineers across the UK
Frequently asked questions
When are J McMillan Gas Ltd's accounts due?
J McMillan Gas Ltd's next accounts are due at Companies House by 31 May 2027 (in 230 days), covering the period to 31 August 2026.
When is J McMillan Gas Ltd's CT600 due?
The CT600 for the period to 31 August 2026 is due at HMRC by 31 August 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 June 2027.
Is J McMillan Gas Ltd still trading?
J McMillan Gas Ltd is listed as active on the Companies House register (checked 13 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 McMillan Gas Ltd do?
J McMillan Gas Ltd is registered under Plumbing, heat and air-conditioning installation (SIC 43220); Repair of household appliances and home and garden equipment (SIC 95220).
How old is J McMillan Gas Ltd?
J McMillan Gas Ltd was incorporated on 26 August 2022, 4 years ago.
What is the penalty if J McMillan Gas 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 McMillan Gas Ltd on Companies House for filed documents, officers and the full history.
Based on the Companies House register (snapshot 1 Oct 2026, rechecked 13 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.