Next summer we have Euro 2020 with England playing three games at Wembley in June and then the two semi-finals and finals also at Wembley in the first two weeks of July. So for example if Spain and Germany meet in the final all London airport's airports are going to have logistical problems, except of course if England play Wales in the final! Also there will be a large executive jet movement with the Wimbledon men's final taking place on the same day and the Open Golf Championship at Royal At George's in Kent commencing in the middle of following week as is the British Grand Prix at Silverstone! Some planning there.
Regarding the cap I think some fudge will occur letting the figure go over the limit - only temporary mind!!