Seems like either this is a couple of years old (Presenter states mark is 70) or his research is badly wrong!
Nobody's interested in his life as much as it deserves and of course, the chance that the interviewer would know more than a Wikipedia article is minuscule.
Wikipedia is not always correct, of course. Journalists still copy and paste the same incorrect information from Wikipedia that MK was raised in Blyth, which is about 12 miles from Gosforth, where he was actually raised. MK has often told the story about walking to school down Salters Road to Gosforth Grammar and looking into the window of a guitar shop on the way. He couldn't have done that if he lived in Blyth. I blame it on lazy journalism.
1962-63 Entering his teens, he stops to gape in a Newcastle guitar shop window at a red Fender Stratocaster. He becomes more interested in mimicking ‘Wipeout’ runs on his school desktop than in his studies, and persuades his father to spend £50 on his first guitar, a twin pick-up Höfner V2. It’s cheap, but it’s red.