In the absence of the universal taking of fingerprints, retaining prints is particularly odious and invidious when people have been falsely accused. That happened to one of my constituents, who suffered the trauma of being arrested, followed only later by a letter of apology from the bonkers lady who had made the accusation. My constituent's prints remain on file. She would not mind if everyone's prints were on file, but she objects very strongly to her prints being a record of that terrible and traumatic event. Perhaps we should think about what we should do in the next phase of the process.