Greg has always been a very popular fourth seater on the show and he's actually the first one of what is considered the main cast to appear on its British incarnation. Nowadays Greg has a very popular podcast called The Smartest Man In The World and you can catch him recording it live in many places all over the world. You can also see his stand up and find him touring and improvising with Whose Live Anyway More info about his schedule and where you can see him on his site.

You can also find him on the CW (currently on Mondays 9|8c) on Whose Line Is It Anyway? because the show has been back with new episodes and a new host since 2013.