| Company | Timeline | Status | |
| Waterproofing Design Partnership Limited Director • Managing Director | 20 Oct 2025←2 Months→Current | Active | |
| Basetec Specialist Construction Supplies Limited Director • Unreported | 13 Nov 2024←1 Year 2 Months→Current | Active | |
| Newton Waterproofing Systems (Holdings) Limited Director • Director | 3 May 2018←7 Years→Current | Active | |
| John Newton Developments (Holdings) Limited Director • Director | 29 Feb 2016←9 Years→Current | Active | |
John Newton & Company (Holdings) Limited Director • Director | 28 Jan 2016←2 Years 9 Months→20 Nov 2018 | Dissolved | |
| Newton Waterproofing Systems Limited Director • Director | 3 Apr 2007←18 Years→Current | Active | |
| Marketing Services (London) Limited Director • Director | 1 Jan 2007←14 Years→5 May 2021 | Dissolved | |
| John Newton (Developments) Limited Director • Director | 1 Jan 2007←19 Years→Current | Active | |
| John Newton & Company Limited Director • Unreported | 1 Jan 2007←19 Years→Current | Active | |
