To help break some people's deeply embedded habits of seeing London as the centre of the known universe, with all the quaint shires and shire folk being distant and unimportant, here's a different view of the British Isles, c. 8,000 years ago.
When people sailing north from Iberia (on the left) would have more easily have reached Ireland than England, and travelling north by sea was easier than trying to move east across land.