U2 were playing at Wembley Stadium on Friday and Saturday evenings.
I went to the cinema, by train.
Upon my return, I expected to have to wait 30 minutes for a train. However, Chiltern Railways had a special timetable running to help cope with the estimated 86,000 concert goers.
Impact? I only had to wait six minutes for a train. Good result.
Oh, and the train was busy.