New BBC DG Tony Hall has announced a raft of changes to the Beeb’s senior team this morning. The stand out name is one James Purnell, the former Labour Work and Pensions secretary who famously quit the government in protest at the Prime Mentalist. He becomes the new Director of Strategy and Digital. Helen Boaden, suspended over the Jimmy Savile scandal, is made Director of Radio. Who says the BBC don’t look after their friends…