| Company | Timeline | Status | |
| W. H. & J. Richardson (Holdings) Limited Director • Book Keeper  | 18 Dec 2000←24 Years→Current  | Active  | |
| W. H. & J. Richardson (Holdings) Limited Secretary • Book Keeper  | 18 Dec 2000←24 Years→Current  | Active  | |
| WH & A Richardson (Properties) Limited Director • Book Keeper  | 30 Apr 1992←33 Years→Current  | Active  | |
| WH & A Richardson (Properties) Limited Secretary • Unreported  | 30 Apr 1992←33 Years→Current  | Active  | |
| P. Richardson Developments Limited Secretary • Unreported  | 27 Nov 1991←27 Years→28 Oct 2019  | Active  | |
| P. Richardson Developments Limited Director • Book Keeper  | 27 Nov 1991←18 Years→14 Sep 2010  | Active  | |
