Last Saturday on Radio 2 Claudia Winkleman was inaugurated as the host of what was formerly Graham Norton’s mid-morning spot. She announced her arrival by playing ‘Help!’ by the Beatles and offering a line-up comprised solely of fellow Saturday-night TV presenters. Here was Sir Tom Jones, calling in from ‘a terrace overlooking the Thames’ and repeating more or less the same interview he had delivered on Graham Norton’s TV show last month.