While playing football, Johnston obtained his law degree from Edinburgh University, and after a career-ending knee injury when he was 28, he joined accountancy firm PricewaterhouseCoopers in Edinburgh, before moving to Sydney and then Adelaide, Australia.
Forbes | Steve Forbes | Forbes 400 | Joseph E. Johnston | Daniel Johnston | Ben Johnston | Malcolm Forbes | Albert Sidney Johnston | Michelle Forbes | Scott Forbes | Ollie Johnston | Johnston Forbes-Robertson | Johnston Atoll | Ben Johnston (composer) | Antony Johnston | Levi Johnston | Johnston | Joe Johnston | Herbert Johnston | Freedy Johnston | Forbes (magazine) | David Johnston | Bryan Forbes | William Forbes Skene | Robin Knox-Johnston | Lynn Johnston | Lawrence Johnston | Kristen Johnston | John Taylor Johnston | John Forbes |