In such a situation, there would appear to be a very good case for a formal complaint to the police regarding sexual assault. Because it's case of 'you can't go to work if you don't', it is a form of blackmail. Additionally, probably a good case for suing the BAA.....
if nothing else, the BAA staff will have a lovely time being interviewed.....if the police won't take it further, doubtless the Daily Mail or the Sun will. With any luck, the security people could get to be put on the Sex Offenders register.