| Company | Timeline | Status | |
| William Arthur London Ltd Director • Engineer | 2 Jan 2018←7 Years→Current | Active | |
William Arthur Projects Ltd Director • Engineer | 7 Oct 2015←9 Months→1 Aug 2016 | Dissolved | |
Abbey Management Ltd Director • Engineer | 28 Aug 2014←3 Years→19 Sep 2017 | Dissolved | |
| McCann Drilling Ltd Director • Drilling Contractor | 12 Aug 1999←2 Months→15 Oct 1999 | Dissolved | |
| McCann Drilling Ltd Director • Engineer | 14 Jul 1999←10 Years→31 Oct 2009 | Dissolved | |
