After todays attempt is foiled, Heathrow Airport closed to all incoming flights not already in the air.

German carrier Lufthansa, Spanish airlines Iberia and Olympic have canceled all flights to the UK.

Carry-on luggage on U.K. flights is limited to:

-Pocket-size wallets and pocket-size purses plus contents (no handbags);
-essential travel documents (for example, passports and travel tickets);
-prescription drugs and essential medical items except in liquid form unless verified as authentic;
-spectacles and sunglasses, without cases;
-contact lens holders, without bottles of solution;
-for those travelling with an infant: baby food, milk (the contents of each bottle must be tasted by the accompanying passenger) and sanitary items sufficient and essential for the flight (nappies, wipes, creams and nappy disposal bags);
-female sanitary items sufficient and essential for the flight, if unboxed (eg tampons, pads, towels and wipes);
-tissues (unboxed) and/or handkerchiefs; and
-keys (but no electrical key fobs).

I can’t imagine the chaos at Heathrow, one of the worlds busiest airports.  I vividly remember waiting in queues amongst grumbling passengers on normal days to board. Today would have been pandemonium for sure.