TPR and I jumped off the train at York to have a quick look round the shops. We didn’t make it back to the train before it set off again, but that didn’t matter because we had tickets that allowed you to break the journey.

Then I remembered that my MacBook Air was sitting screen-open on the table at my seat on the train. My only hope of retrieving it was to phone the passenger who had been sharing our table and ask him to look after my computer until we could catch up with it, and the rest of our belongings, in London.