Tic-Tac ("Did she just shake her tic-tacs at me?") 

MTV (a series of shorts directed by Jim Hosking)

Eurostar (with John Malkovic)

Post Office (with Richard Branson, "will there be a website?")

Daz (Simon was the small white dog)

BT (falling over in the street)

Simon also has voiced many radio and TV ads.