On an advice page for tackling shoplifters, the watchdog said stores 'must only share personal information that's proportionate and necessary to achieve your purpose'.

Watchdog’s warning comes as despairing retailers wonder whom the law is supposed to protect

On an advice page for tackling shoplifters, the watchdog said stores 'must only share personal information that's proportionate and necessary to achieve your purpose'.

Force clarify the law after Wrexham retailer told anti-theft sign could cause offence