| Company | Timeline | Status | |
| Simon Sivyer Associates Ltd Director • Director | 9 May 2025←5 Months→Current | Active | |
| Cleedon Ltd Director • Director | 28 Oct 2021←1 Year→16 Nov 2022 | Active | |
| Aggregate Industries Limited Director • Director | 11 Jun 2015←7 Years→31 Mar 2023 | Active | |
| G.R.Hutchings Limited Director • Director | 18 Jun 2014←8 Years→31 Mar 2023 | Dissolved | |
| Sivyer Recycling Limited Director • Director | 7 Apr 2014←8 Years→31 Mar 2023 | Active | |
Sivyer Recycling (Waste & Aggregates) LLP Designated LLP Member • Unreported | 18 Mar 2010←6 Years→24 May 2016 | Dissolved | |
Sivyer Projects LLP Designated LLP Member • Unreported | 18 Mar 2010←7 Years→5 Sep 2017 | Dissolved | |
| Sivyer Logistics Limited Director • Director | 17 Apr 2009←13 Years→31 Mar 2023 | Active | |
| G.R.Hutchings Limited Secretary • Unreported | 31 Mar 2005←18 Years→31 Mar 2023 | Dissolved | |
| H. Sivyer Transport Limited Director • Director | 1 Jun 1991←31 Years→31 Mar 2023 | Active | |
