Please enable it in your browser's preferences.
You can visit our support center if you're having problems.
Please try one of our supported browsers.
Please check your internet connection and refresh the page. You might also try disabling any ad blockers.
Listening to Paul Evans' fascinating stories about Alan Turing's eccentricities, outside the pigeon loft looking at the entrance into Bletchley Park - this is where Alan used to cycle into work.