The main cast for the docudrama now seems to be complete: Bradley as Hartnell, Claudia Grant as Carole Ann Ford, Jamie Glover as William Russell, Jemma Powell as Jacqueline Hill, Brian Cox as Sydney Newman, Jessica Raine as Verity Lambert, and Sacha Dhawan as Waris Hussein. Also-- and this is probably the coolest part-- William Russell himself will appear as "Harry." Presumably just a cameo, but a very nice touch. Maybe they can work Carole Ann Ford in as well?