| Company | Timeline | Status | |
| The Barns Studio Ltd Director • Designer | 28 Sep 2011←11 Years→20 Jun 2023 | Dissolved | |
| Pentagram Design Services Limited Director • Designer | 29 Jun 1993←13 Years→31 Jan 2007 | Active | |
| Pentagram Design Limited Director • Designer | 11 Mar 1992←14 Years→31 Jan 2007 | Active | |
Studio David Hillman Limited Director • Design Consultant | 25 Feb 1991←22 Years→24 Jan 2014 | Dissolved | |
