Elderly relative (aged 88) received a phone call last week from someone saying they were from the local hospital, asking him to confirm his National Insurance number and hospital number. As he's reasonably on the ball, he told them if they were calling from the hospital and had his phone number, they'd also be able to see the other information and then he put the phone down.
It has me wondering, though, how would scammers use NI and hospital numbers? Identity theft, maybe?