| Company | Timeline | Status | |
| Langdon Park Residents Association Limited Director • Landscape Architect | 1 Jun 2014←10 Months→1 Apr 2015 | Active | |
| Turkington Design Studio Limited Director • Director | 25 Oct 2012←13 Years→Current | Active | |
| Protean Developments Limited Director • Landscape Architect | 3 Feb 2011←14 Years→Current | Active | |
Whitelaw Turkington Landscape Architects Limited Director • Landscape Architect | 3 Apr 2002←5 Years→29 Feb 2008 | Dissolved | |
