Les Kellet comes to mind for having such a long and successful career as a Pro Wrestler.Starting so young and going on for quite a few years.Did any other wrestlers have such a long and varied career over there in the UK?
If you count involvement in Wrestling as part of the career then Johnny Saint has a career touching eight decades because until lockdown he appeared as "commissioner" for Next UK
Adrian Street and Johnny Saint both made their professional debuts in 1958 and Adrian wrestled in seven different decades.