| Company | Timeline | Status | |
| Chromatics Glass Limited Director • Director | 21 May 2018←3 Years→4 May 2022 | Dissolved | |
| Garrett Motion UK D Limited Director • Company Director | 13 Jun 2007←7 Years→31 Dec 2014 | Dissolved | |
| Stamptree Limited Secretary • Director | 8 Mar 2006←14 Years→26 Feb 2021 | Active | |
| Calder Group (Trustees) Limited Director • Company Director | 8 Mar 2006←14 Years→1 Jan 2021 | Active | |
| Calder Holdings Limited Director • Company Director | 8 Mar 2006←14 Years→26 Feb 2021 | Active | |
| Calder Group Limited Director • Company Director | 8 Mar 2006←14 Years→26 Feb 2021 | Active | |
| Calder International Holdings Limited Director • Company Director | 8 Mar 2006←14 Years→26 Feb 2021 | Active | |
| Stamptree Limited Director • Director | 21 Feb 2006←15 Years→26 Feb 2021 | Active | |
| Columbia-Staver Limited Director • Company Director | 25 Jan 2005←20 Years→Current | Active | |
| Lazard & Co., Limited Director • Merchant Banker | 20 Apr 1992←8 Years→1 Aug 2000 | Active | |
