I’m a bit of a latecomer to The Bletchley Circle, I sky +d it so I could watch ‘Good Cop’ and shamelessly drool over Warren Brown. But I’ve watched two episodes this weekend, and have found myself falling in love with the fabulous glamour and style of Millie, played by the wonderful Rachael Stirling. The Bletchley Circle is set in the early 1950s, but forget about any Marilyn Monroe/Grace Kelly sort of 1950s glamour. This is Austerity Britain, a time when ration books were still de rigueur and when you found glamour and elegance where you could. Millie is a slightly bohemian character, all auburn hair and long swishing headscarves.…