Threads like this are the reason I pack pants, socks, deodorant, toothbrush and toothpaste in my hand luggage if flying with BA.
lol my flight got diverted because of a medical emergency and they landed us in reykjavik in the middle of the night and deplaned us and sent us through passport control and then the crew vanished and then british airways sent us links to book an overnight hotel room but for a hotel at heathrow