| Company | Timeline | Status | |
| Studio Boulton Ltd Director • Designer | 26 May 2017←6 Years→14 May 2024 | Dissolved | |
Five Simple Steps Publishing Limited Director • Designer | 14 Feb 2012←2 Years 2 Months→7 May 2014 | Dissolved | |
Five Simple Steps LLP Designated LLP Member • Unreported | 16 Nov 2009←4 Years→18 Mar 2014 | Dissolved | |
41 Days Limited Director • Creative Director | 25 Feb 2008←2 Months→1 May 2008 | Dissolved | |
Mark Boulton Design Ltd Director • Graphic Designer | 20 Feb 2007←7 Years→8 Apr 2014 | Dissolved | |
