Check your facts
A and C. Can you clarify what you mean by the staff that the UK employs for security screening? Security staff are employed by the airport operator, for example at Heathrow, Gatwick, Stansted etc. BAA are the employer - not the UK. If the staff at some central search areas are rude, aggressive, offensive then do something about it and stop filling these pages with rubbish.Ask to see the supervisor and explain what happened, write to BAA and complain, take the individuals name and a description, the time the problem occurred, the exact location, names of any witnesses who will confirm what happened and the names of other staff members working in the same team.It is a shame that one or two bad staff members can taint everyone doing the same job and nothing will happen to rectify the situation if all the complaints are on here and not on a managers desk to deal with.Oh, and if you or others (as yopu state - at captains discretion) are happy to have others on the flight deck with you and cannot see why the UK, amongst others, does not permit it, best stay off the island!