| Company | Timeline | Status | |
| Slingers 1858 Limited Director • Director  | 7 Dec 2011←13 Years→Current  | Active  | |
| R. Slinger & Son Limited Director • Managing Director  | 3 Jul 2000←25 Years→Current  | Active  | |
| R. Slinger & Son Limited Director • Systems Co-ordinator  | 30 Mar 1995←4 Years→26 Nov 1999  | Active  | |
