Watch TV Series Great British Theatre Amazon Prime Online Stream Free. A series of blockbuster theatre productions filmed live by the National Theatre. Includes Phoebe Waller-Bridge’s original play Fleabag, Hamlet with Benedict Cumberbatch, Ian McKellen on Stage with the award-winning actor reflecting on his career, and Danny Boyle’s Frankenstein with Benedict Cumberbatch and Jonny Lee Miller alternating the roles of Victor Frankenstein and his creation.