 He plays the role of "Ron Bone" - manager of The Mallard Theatre - in BBC Radio 4's sit-com "The Simon Day Show", from 2012 (6 half-hour-long episodes) - also repeated several times through the years on BBC Radio 4 Extra.He was also winner of Celebrity Mastermind in 2015 and voiced the character of Dave Thompson in "Peter Kay's Car Share".In 2015, Greenall provided the voice of Terry in an episode of "Thunderbirds Are Go", a remake of the 1960s series.