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Thanks all. We’ve booked train tickets to arrive in town mid morning and booked our time slot for the exhibition. We’ll use buses rather than tube, as it’s our preferred option anyway. As you say, we’ll take pot luck with cafes and can always make do with a Pret and a meal deal for the train home!
I’m pleased to hear its still reasonably quiet on the streets, time to make the most of that after lockdowns but before it gets back to the normal hustle and bustle.