Originally Posted by
ExXB
Mark, Ice is forbidden at many airports. I recall a thread relating that at Heathrow is was often possible to get 'replacement' ice from airside restaurants because security had refused it. Some medical supplies or body bits required the ice.
Don't know about UK, but apparently it's OK in the US, of all places. The rationale I heard is that if the liquid freezes, then it can't be an explosive, and others piped in to back that up.