ALEXANDER Armstrong is at Hungerford Bookshop on Friday evening between 7pm and 9.30pm, to sign copies of his first children’s book: Evenfall, The Golden Linnet. Alexander has been lucky enough to be part of some of the most successful programmes of recent times from Armstrong and Miller to Have I Got News for You via Classic FM, Doctor Who, Hey Duggee, Horrible Histories, Pointless and Danger Mouse. The broadcaster, actor, comedian, singer and author is himself the father of four boys and knows all about the power and the joy of sharing stories. His debut novel for nine- to 13-year-olds is in…