| Company | Timeline | Status | |
| Durham City Coaches Limited Director • Director  | 26 Jun 2020←1 Year 1 Month→24 Aug 2021  | Dissolved  | |
| D Collin (Holdings) Limited Director • Director  | 6 May 2020←3 Years→8 Aug 2023  | Dissolved  | |
| Collin Property Developments Limited Director • Unreported  | 8 Mar 2017←8 Years→Current  | Active  | |
| Enterprise Travel Limited Director • Director  | 29 Sep 2014←9 Years→14 Nov 2023  | Dissolved  | |
| DCC Durham Limited Director • Director  | 1 Mar 2013←9 Years→10 Apr 2022  | Dissolved  | |
| DC Assets Limited Director • Entreprenuer  | 25 Feb 2013←11 Years→29 Oct 2024  | Dissolved  | |
| Lee's Coaches Limited Director • Director  | 27 Jan 2012←13 Years→Current  | Active  | |
Smart Innovations Grid Limited Director • Entreprenuer  | 9 Jul 2010←5 Years→3 Jun 2016  | Dissolved  | |
Smart Cellar Limited Director • Entreprenuer  | 10 Nov 2009←6 Years→22 Jun 2016  | Dissolved  | |
| Quay Point Management Company Limited Director • None  | 24 Jan 2008←2 Years 6 Months→26 Jul 2010  | Active  | |
