Britain’s biometrics watchdogs have warned that national oversight of AI-powered face scanning to catch criminals is lagging far behind the technology’s rapid growth. With the Metropolitan police almost doubling the number of faces they scan in London over the past 12 months and a rising use of the technology by retailers in the UK, Prof William Webster, the biometrics commissioner for England and Wales, said the “slow pace of legislation was trying to catch up with the real world” and “the horse had gone before the cart”. Dr Brian Plastow, who holds the same role in Scotland, warned the technology was “nowhere near as effective as the police claim it is” and said there was a “patchwork legal framework” throughout the UK. He said in England and Wales, police were “really just marking their own homework”. The watchdogs said new laws were needed to govern when and how police forces used live facial recognition technology, with a new regulator to clamp down on misuse. Several bodies have oversight of the technology, including the Information Commissioner’s Office (ICO) and the Equality and Human Rights Commission. The Home Office is considering a new legal framework for the technology as it also plans to introduce nationally what it calls “the biggest breakthrough for catching criminals since DNA matching”. Members of the public wrongly labelled as suspected criminals by shops using AI cameras said there was no accountability or recourse to complain. They said the system had left them feeling “guilty until proven innocent”. They described the ICO, which is responsible for monitoring facial recognition tech and the biometric data it uses, as “toothless” and unresponsive. British police forces and high street retailers claim the technology makes streets safer, but others criticise it as Big Brother-style mass surveillance, with risks for civil liberties and