Apparently, without detailed evidence of wrong doing, the Government cannot act.
Rubbish. Dangerous rubbish.
If the plane was flying in from Columbia, and was planning to go to Lebanon and Afghanistan, before returing to Prestwick, I suspect that the Customs boys would be all over the plane searching for drugs with or without hard facts. But in this case, it is only people who may - or may not - have done anything.
I suppose the next excuse will be that the passengers are guests on the flight, and that they haven't complained about their treatment.
The Government's attitude makes me embarassed to be represented by these chancers.