Foster's work includes Kayleigh Llewellyn's In My Skin (BBC), which won Best Drama at both the BAFTAS and the RTS Awards, Coky Giedroyc's feature musical based on the songs of Take That, Greatest Days, All or Nothing: Arsenal and ITV's animated family adventure series co-produced with Weta, Thunderbirds Are Go (written with his brother Ben Foster), for which they were nominated for a Bafta in 2016.