Douglas is a solicitor with more than 35 years of experience who has practised extensively in property and land titles-related matters. Before joining Pryor Tzannes & Wallis in 2017, Douglas practised in the Mascot-Rosebery area for several years and before that he was a sole practitioner with offices at Miranda for many years, after a stint in the City of Sydney. As a sole practitioner he ranged over a wide area, including wills and estates, property, commercial litigation, and criminal practice matters.
Douglas is a keen golfer, representing The Lakes Golf Club in interclub events. His other interests include contract bridge, where he has played for the NSW Bridge Association and represented them in interclub events. For many years Douglas was the Honorary Solicitor for the NSW Bridge Association.