Continuity: Harry Palmer uses the leather wrist restraints to lacerate his wrists - the pain enables him to resist being involuntarily hypnotised. The next time he is woken roughly by the guards for another hypnosis session, his wrists are unmarked.
Other: In the scene where Palmer raids the factory in search of Radcliffe, he summons a Land Rover to break down the warehouse door with a silent wave of his hand, but the Land Rover appears from behind a corner and therefore could not have seen him.