The Conservatives say they will force hardcore pornography websites to put in place age-restriction controls or face being shut down if they win the election. The culture secretary, Sajid Javid, said the party would act to ensure under-18s were locked out of adult content after a recent Childline poll found nearly one in 10 12-13 year olds were worried they were addicted and 18% had seen shocking or upsetting images. Experts welcomed the move – targeted at both UK-based and overseas websites – but warned it would take hard work to implement in practice.