| Company | Timeline | Status | |
| Chester Zoo Uganda Limited Director • Retired | 23 Jul 2025←4 Months→Current | Active | |
| Chester Zoo Hotels Limited Director • Director | 23 Jan 2023←2 Years 10 Months→Current | Active | |
| Chester Zoo Enterprises Limited Director • Managing Director | 7 Jul 2021←4 Years→Current | Active | |
| The North Of England Zoological Society Pension Trustee Company Limited Director • Proprietor Director | 7 Apr 2017←7 Months→21 Nov 2017 | Active | |
Chester Zoo Islands Limited Director • Director | 9 Jul 2013←1 Year 4 Months→2 Dec 2014 | Dissolved | |
| North Of England Zoological Society (The) Director • Proprietor Director | 24 Nov 2006←19 Years→Current | Active | |
| Giotto Engineering (Projects) Limited Director • Company Director | 31 Jul 1998←27 Years→Current | Active | |
| Giotto Engineering Limited Director • Director | 8 Jan 1993←32 Years→Current | Active | |
