"on31 January 2009 I was on duty at Belfast International Airport as a part of operation Dove. On that date I was observing persons disembarking from an Easy Jet flight from London Stanstead. I made a request for identification of the claimant. The claimant presented a Nigerian passport which demonstrated that he was the beneficiary of a 5 year UK visitor's visa issued on14 December 2006 . It transpired that the claimant had arrived in the UK at London Heathrow on13 January 2009 "