| Company | Timeline | Status | |
| PQ Holdings I Limited Director • Director  | 2 Aug 2011←4 Years→1 Aug 2015  | Active  | |
| PQ Intermediate Limited Director • Director  | 2 Aug 2011←4 Years→1 Aug 2015  | Active  | |
| PQ Holdings I Limited Director • Director  | 18 Mar 2011←4 Months→2 Aug 2011  | Active  | |
| PQ Intermediate Limited Director • Director  | 18 Mar 2011←4 Months→2 Aug 2011  | Active  | |
| PQ Silicas UK Limited Director • Businessman  | 20 Dec 2007←7 Years→1 Aug 2015  | Active  | |
