- Companies
- Plumbers and heating engineers
- Edinburgh
- J.S. Mason Plumbers Ltd
J.S. Mason Plumbers Ltd
- Company number
- SC851110
- Incorporated
- 4 Jun 20251 year trading
- Registered office
- Bonnington Bond, 2 Anderson Place, Edinburgh, EH6 5NP
- Nature of business
- Plumbing, heat and air-conditioning installation
J.S. Mason Plumbers Ltd is a 1-year-old private limited company registered in Edinburgh, company number SC851110, one of 176 plumbing and heating companies in Edinburgh. Its next accounts are due at Companies House on 31 March 2028, and the CT600 for the period to 30 June 2027 is due at HMRC on 30 June 2028.
Key dates
Worked out from the year end and filing history on the Companies House register.
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Financial snapshot, 2026
From the balance sheet at 30 June 2026, as filed at Companies House.
Where J.S. Mason Plumbers Ltd is registered
The registered office is in Edinburgh (EH6), in the City of Edinburgh local authority area, Scotland. Show EH6 5NP on a map.
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Shared registered office
53 companies on our pages use this registered office address. An address shared this widely is usually an accountant's office or a company formation agent's service address, not where the business trades from.
What happens if J.S. Mason Plumbers 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 March 2028.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Apr 2028 to 30 Apr 2028 | £150 |
| 1 to 3 months late | 1 May 2028 to 30 Jun 2028 | £375 |
| 3 to 6 months late | 1 Jul 2028 to 30 Sep 2028 | £750 |
| More than 6 months late | From 1 Oct 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jul 2028 | £200 |
| 3 months late | 30 Sep 2028 | another £200 |
| 6 months late | 30 Dec 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Jun 2029 | 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
- SC851110
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 4 June 2025 (1 year ago)
- Registered office
- Bonnington Bond, 2 Anderson Place, Edinburgh, EH6 5NP
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 30 June (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 30 June 2026
- Last confirmation statement
- 3 June 2026
- Previous names
- J.S Mason Plumbers Ltd (until 18 Jun 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 Edinburgh
Other active plumbing and heating companies registered in Edinburgh.
- Jacobsen Bathrooms Ltd2023
- James A Carlyle & Son Limited2020
- James Neil & Son Plumbing and Heating Limited2022
- Jamie Dillon Plumbing & Heating Ltd2019
- JJ & B Group Ltd2026
- JJB Plumbing & Heating Limited2024
- JMF Plumbing Ltd2024
- Juniper Plumbing & Heating Ltd2023
All plumbing and heating companies in Edinburgh · All trades in Edinburgh · Plumbers and heating engineers across the UK
Frequently asked questions
When are J.S. Mason Plumbers Ltd's accounts due?
J.S. Mason Plumbers Ltd's next accounts are due at Companies House by 31 March 2028 (in 535 days), covering the period to 30 June 2027.
When is J.S. Mason Plumbers Ltd's CT600 due?
The CT600 for the period to 30 June 2027 is due at HMRC by 30 June 2028, 12 months after the period end. The corporation tax itself is payable earlier, by 1 April 2028.
Is J.S. Mason Plumbers Ltd still trading?
J.S. Mason Plumbers 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.S. Mason Plumbers Ltd do?
J.S. Mason Plumbers Ltd is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is J.S. Mason Plumbers Ltd?
J.S. Mason Plumbers Ltd was incorporated on 4 June 2025, 1 year ago.
What is the penalty if J.S. Mason Plumbers 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.S. Mason Plumbers 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.