Naman Ramachandran In today’s Global Bulletin, Gugu Mbatha-Raw headlines BBC’s “The Girl Before”; VFX veteran Oikonomopoulou joins Cinesite; Channel 4 appoints Ally Castle as disability lead; Meihodo festival reveals winners; Snipple Animation launches U.K. originals outfit; and “Little Birds” and “My Big Family Farm” sell worldwide.Gugu Mbatha-Raw (“The Morning Show”) is set to star in a BBC adaptation of J.P. Delaney’s best-selling novel “The Girl Before,” with 42 (“Military Wives”)