British Progressive Rock fans are today delighted that in a big nod to their favourite music Prince William and Kate are to name their new son Olias, after the eponymous hero of 1970s concept album, Olias of Sunhillow, by Yes vocalist Jon Anderson.

Prince William told BBC Breakfast: ‘Wow, like yeah, man. Kate and I discussed this at length before settling on Olias. Dear Granny, she’s a bit of an old square, had asked us to call him Philip but we weren’t into that kind of vibe. It just wasn’t cool and we wanted a cool name. Prince Olias sounds so cool. Like a kind of olden times dude.’

It’s also been revealed that during her labour in St Mary’s Hospital Lindo Wing, prog-mad Kate listened to all four sides of Yes’s Tales From Topographic Oceans back to back on a loop.

Later as they prepared to leave the Hospital the proud parents showed the fifth-in-line to the throne off to an adoring public, with the latest Royal wearing a Vivienne Westwood designed little multicoloured mini-kaftan and matching headband.

As the pleased-as-punch couple got into the waiting limo Prince William confirmed that Jon Anderson has been asked to be Prince Olias’s godfather and that he and Kate ‘Very much hope that the aging vocalist will accept.’

Meanwhile Yes keyboardist, Rick Wakeman, when told the news is believed to have simply said: ‘Christ on a bike!’