I dont think BA is particularly at fault over this incident and many airlines carry deportees. I can remember flying to Romania many times with Tarom prior to their EU accession. At times almost half the passengers on board seemed to be there courtesy of HM Immigration service. The point about deportees using every trick in the book is perfectly valid and provides some of the best pre and in flight entertainment in the industry. The ladies always seem to want to take their clothes off prior to being chased by a hapless crowd of Wackenhut security officers around the departure lounge.