Although he was mainly known in North East England, he also toured. He appeared with a group of rock 'n' roll dancers in London, before becoming a vocalist and turning his patter between songs into a comedy act.[2] He became a cabaret star appearing alongside the likes of Johnny Mathis, Roy Orbison and Louis Armstrong.[3] He also became popular in Africa and the Middle East, appearing on bills with Ella Fitzgerald and José Feliciano.[2]
Knoxall recorded Sunderland’s 1973 FA Cup Final record, "Sunderland All the Way".[2] He quit performing owing to ill-health, but made a comeback in 2002.[3] He received an MBE for services to entertainment and charity in 2004.[4] It is estimated he raised at least £1million for charity during his 50-plus years on the stage.[5] His autobiography, Stand Up!, was released in 2003.[6]
Knoxall, who suffered from liver and kidney problems, died in July 2009 at Sunderland Royal Hospital.[3]