For those counting calories, there’s a website just for you: www.walkit.com not only gives you written directions plus map on how to walk from A to B (central London only) but also tells you how many calories you have burned up in the process. So when you next walk to a restaurant you will be able to work out whether or not you have lost enough calories en route to eat that pudding.

Britain’s best politics newsletters
You get two free articles each week when you sign up to The Spectator’s emails.
Already a subscriber? Log in
Comments
Join the debate, free for a month
Be part of the conversation with other Spectator readers by getting your first month free.
UNLOCK ACCESS Try a month freeAlready a subscriber? Log in