Graham B. Walker graduated from law school at the University of British Columbia in 1962. He articled at Messers, Bull, Housser and Tupper, under David Brander Smith, QC. After call, Walker joined various firms, including serving as a junior to H. A. D. Oliver at Oliver Miller, whom he recalls argued an objection in Latin relying on Caesar's Gallic Commentaries. He settled into sole practice in 1967, and operated his own firm until retirement at the end of 2010.
Mr. Walker also operated a marine towing business for a period during the 1970s and early 1980s. He purchased a 60' wooden tug named Damar in 1969, which had been built in 1936 and was possibly the last wooden tug built in Coal Harbour. Damar's engines were rebuilt before entering into service to tow log rafts and rafted bundles of logs, oil parges, and chipper barges. On occasions the tow would also assist in docking freighters. The work spanned all along the BC coast, but at times would extend all the way down to Seattle or up to Ketchikan, Alaska. Walker sold his interest in 1982 when he lost his skipper, but later learned the vessel was lost in Desolation Sound after colliding into a rock bluff.
Walker was a dedicated founder and director of Access Justice up until its merging with Pro Bono in 2011. He also served his community as President of the North Shore Chamber Music Society, an organization for which he also played first violin in their orchestra. He is also an avid Jaguar enthusiast, owning both a 1950 Mark V Saloon and a 1969 XKE Coupe, and serving as secretary for the Jaguar Car Club in Vancouver. He continues to enjoy maintaining both vehicles, and enjoying them on long trips through British Columbia.