I’ve been invited by the tourist authorities in Hong Kong and Singapore next month to give some talks about the’ Best of British and World Railway Travel’. So what is the ultimate railway journey of dreams in the UK. Not just of today but in history? I defined it in my new book ‘The Trains Now Departed?’ – out from Penguin Random House on May 7– as the train to Glastonbury – aboard the old Somerset and Dorset Railway, closed half a century ago. But what do you think?