The guy in the green mask and his friend both got on the bus without masks on. He put his on when he sat down but took it off immediately, only to be bollocked by an old woman sitting nearby. His excuse was that he'd already been on one long bus journey and he was hot. He then spent the rest of my journey taking his mask off and putting it back on again.
The guidelines are there for a reason and apply to everyone. We can't pick and choose which ones to follow, and you can be sure that they'll want the healthcare professionals treating them to wear their masks.