Speedbird61
I thought since the incident at Heathrow, where terrorists snuck on board liquids ready to make explosives,
This is the fun part - I think you will find that nothing of the sort happened.
They found a PLOT to do this but it was not close to fruition. Subsequently, various military and explosives people said (words to the effect): The chances of amateurs being able to cook up a device, in the a/c toilet, whilst it is being jiggled around at the cruise, is effectively zero. The process takes several hours and is normally done in a lab. The CC would be more than suspicious of the activity and time being spent in the toilet.
So, no one has tried and few believe it can be done.
So the politicians immediately 'protected' us from this ghastly risk.