Complex sentence: John Parry-Gordon is a former professional rugby league footballer of the 1960s, 70s and' 80s who at representative level has played for England, and Lancashire, and at club level for Warrington, playing at Scrum-half/Halfback, i.e. number 7.
Split into simpler sentences: John Parry-Gordon was an English professional rugby league footballer of the 1960s,'70s and' 80s. At representative level he played for England, and Lancashire, and at club level for Warrington, playing at Scrum-half/Halfback, i.e. number 7.