| Company | Timeline | Status | |
| Summer Hill House Management Company Limited Director • Unreported | 1 Sep 2011←14 Years→Current | Active | |
The Suburban Property Company Limited Director • Civil Engineer | 14 Sep 2004←11 Years→7 Jul 2016 | Dissolved | |
| Cumbria Tourism Director • Civil Engineer | 18 May 2000←2 Years 12 Months→15 May 2003 | Active | |
Brian Campbell Associates Limited Director • Civil Engineer | 31 Aug 1994←23 Years→19 Dec 2017 | Dissolved | |
Brian Campbell Associates Limited Secretary • Civil Engineer | 31 Aug 1994←23 Years→19 Dec 2017 | Dissolved | |
| Ove Arup & Partners Limited Director • Civil/structural Engineer | 27 Nov 1992←1 Year 6 Months→31 May 1994 | Active | |
| Ove Arup & Partners International Limited Director • Civil/structural Engineer | 27 Nov 1991←2 Years 6 Months→31 May 1994 | Active | |
