| Company | Timeline | Status | |
| The Study Space Tuition Centres LLP Designated LLP Member • Unreported | 21 Dec 2022←2 Years 10 Months→Current | Active | |
| Concept Consulting Engineers Limited Director • Company Director | 6 Dec 2022←2 Years 10 Months→Current | Active | |
| El Clasico Trading Limited Director • Company Director | 15 Apr 2021←3 Years→3 Dec 2024 | Dissolved | |
| Argyle20 Limited Director • Chartered Engineer | 2 Jan 2019←1 Year 10 Months→3 Nov 2020 | Dissolved | |
| Hive Developments & Investments Ltd Director • Chartered Engineer | 26 Apr 2018←4 Years→28 Nov 2022 | Active | |
| Colin Gray Consultancy Limited Director • Director | 20 Feb 2018←7 Years→Current | Active | |
C M Gray & Associates Limited Director • Director | 14 May 2015←4 Years→5 Nov 2019 | Dissolved | |
| Aspirare Limited Director • Company Director | 16 Apr 2015←10 Years→23 Sep 2025 | Dissolved | |
Concept Structures Design Consultancy Limited Director • Company Director | 23 Sep 2013←2 Years 6 Months→22 Mar 2016 | Dissolved | |
Concept Structures Consulting Limited Director • Director | 23 Feb 2009←5 Years→21 Oct 2014 | Dissolved | |
