Derek Cassidy QC was admitted into practice in 1955 and was appointed QC in 1980. He retired from active practice in 2008 at age 77 . Initially at Selborne Chambers, Derek then moved to Latham Chambers after he took silk. He was the chairman of the Medicare Participation Review Committee from 1975-2006, member of the Serious Offenders Review Board (then Council) from 1990-1996 and President of the Medico-Legal Society of NSW 1980-1982. In 1996 Derek with Evan Lewis wrote Tenancy Law in New South Wales. He originally co-authored with Michael Redfern Australian Tenancy Practice and Precedents in 1986 which is published online and in loose leaf. In 2017, his work was re-written as Australian Tenancy Law and Practice with co-author Brian Ralston. He also co-authored Interest Awards Australia in 2003 with Dr James Edelman, as his honour then was.
Derek has retired to Orange since 2006.
Derek has retired to Orange since 2006.