| Company | Timeline | Status | |
| Rogam Ltd Director • Director | 10 Mar 2020←5 Years→Current | Active | |
| Ngong Tea Ltd Director • Director | 9 Mar 2020←5 Years→Current | Active | |
| Herne Limited Director • Director | 15 Apr 2019←6 Years→Current | Active | |
| Williamson Fine Teas Limited Director • Farmer | 26 Apr 2013←12 Years→Current | Active | |
| Williamson Tea Holdings Ltd Director • Farmer | 20 May 2009←1 Month→3 Jul 2009 | Dissolved | |
| George Williamson & Co. Limited Director • Director | 19 Feb 2007←18 Years→Current | Active | |
| Rogam Farms Ltd Director • Director | 31 Jan 2007←18 Years→Current | Active | |
| Magor Tea Limited Director • Director | 10 Jan 2007←18 Years→Current | Active | |
| Ngong Tea Holdings Limited Director • Director | 10 Jan 2007←18 Years→Current | Active | |
Williamson Flowers Limited Director • Director | 10 Jan 2007←9 Years→9 Aug 2016 | Dissolved | |
