An ex-flight attendant has revealed why it's not a good idea to take your shoes off during a flight - and why simply popping on a pair of flip-flops won't cut it, either.

While flying, you may be tempted to take off your footwear to make yourself a bit more comfortable, but Tony Kuna - who has previously worked as a member of flight crew - has said it could end in disaster if there's an in-flight emergency.