Reps for Frost and Graham have been contacted for comment.
Frost and GrahamsThe Spanish PrincessfollowedThe White PrincessandThe White Queen.
Graham co-created the iconic BBC seriesLife On MarsandAshes To Ashes.
Emma Frost and Matthew Graham, co-founders of Watford & EssexSupplied
Frost is repped by Curtis Brown.
Graham is represented by Valerie Hoskins Associates.
