He's one of Britain's most wanted men and he could be sitting on millions of pounds of stolen money. But two years after he was last sighted abroad, the trail has gone cold in the hunt for Sean Lupton, one of the suspects in the Tonbridge Securitas raid - Britain's biggest cash robbery. Tonight in her first broadcast interview ..... ....the wife he left behind, breaks her silence over his disappearance. Therese Lupton asks why he's not yet been caught