It's going to take a giant leap of faith in the effectiveness of the vaccine and the non-transmissibility of the virus in a minimum 10-15 minute train journey to/from a full house Amex. Any worries on that score and you'd be strongly advised to choose ANY other mode of transport. By the time the first train back to Brighton finally trundled into Falmer station after the final whistle of the Man City game, fans were six deep on the platform. And that was with a severely reduced capacity of 9,000 or whatever it was
I’ve got a high degree of faith in the effectiveness of the vaccine, so I’m not overly worried about transmission……..? Agree anyone who is worried, or not fully vaccinated, would be wise to avoid the trains - but as @GB points out it’s not likely to be the ‘wise’ that mostly fall into this group.
Track and trace pinging will increase greatly if it’s not de-sensitised before mass gatherings really kick off.