Jessie Buckley on playing outcasts " and hitting the big time
The star of new BBC1 drama The Last Post talks about luck, love and landing roles in a series of notable film and TV projectsShe first came to public attention as an effervescent 17-year-old with a big voice and a brilliant smile in I'd Do Anything, Andrew Lloyd Webber's search for a musical star, finishing an emotional runner-up after the public vote, despite the judges' support for her raw talent.Since then, Jessie…