Some may be exempt on health grounds but of course you don't know who they are because nobody wear a Tee shirt with the message "I'm exempt for medical reasons."
Take for instance the heavily tattooed man on the first leg of our journey from Eastbourne to Gatwick Airport. He got on, took out a face mask, hung it from one ear until he got up to go onto the station and then put it on. The rule is to wear a mask whilst on the transport and not necessarily the station.
It was a lengthy, hot and at times strange journey home, but we eventually made it. Hopefully tomorrow I will be back to blogging about interesting things.