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