I'm currently in Greece, flew into a small mainland airport, not very busy at all. Two flights from UK arrived within 15mins of each other and it was utter chaos. The security checks consists of just 2 desks and once the small room is full, the queue ends up congregating outside (in 34 degree heat).
A short time later a flight arrives from Paris and of course all the passengers are ushered through the EU/Schengen queue. Well the tuts and shouts of disgust and anger soon started. My DH said in a very loud voice 'that's Brexit for you' to which many passengers either looked pissed off or confused.
Some people really don't get it. Brexiteers voted for this shit but still won't accept any responsibility for it. God help us when the Exit/Entry system kicks in.