"Silks" are eminent lawyers who have been given the honor of being selected as Queen's Counsel
The island with the lighthouse is Bass Rock in Scotland.
David Tennant and Sophie Okonedo were both in Doctor Who. Sophie as Liz Ten and David as the Tenth Doctor.
David Tennant and Ashley Jensen both had voice roles in the movie "How to train your Dragon' (2010)
Paul Daniels was a widely acclaimed British magician who had a popular TV show for 15 years.