I agree @MEKON. CCTV can be analysed to death but if someone things that the person is Ray then the question has to be asked-"Could it possibly be him"
Perhaps it could if someone else went to the Algarve on his behalf and managed to fool customs officers an both sides of the journey.
It's a possibility and people or people's have certainly been 'lucky or clever' enough to at least stall their prosecution
I'm sure the leg behaviour of the 'Dark alley person' would determine if its someone or not