| Company | Timeline | Status | |
| Nick Walker Landscape Architecture Ltd Director • Director | 29 Mar 2024←1 Year 9 Months→Current | Active | |
| Barnes Walker Landscapes Ltd Director • Landscape Architect | 5 Apr 2005←20 Years→12 Nov 2025 | Active | |
| Barnes Walker Limited Director • Landscape Architect | 6 Jul 2001←22 Years→15 Apr 2024 | Active | |
BWP Landscapes Ltd Director • Landscape Architect | 1 Oct 1997←16 Years→19 Aug 2014 | Dissolved | |
