I think I can hear John Lennon happily laughing somewhere. John Winston Lennon was famously expelled from Quarry Bank High School, and, in his song I Am the Walrus, railed at the “expert texperts” (slang for his English teachers) who doubted his literary and musical genius, singing “don't you think the joker laughs at you?!”

Well, Lennon is certainly having the last laugh because the stunning John Lennon Educational Tour Bus was opened today in high style by his widow Yoko Ono Lennon in – where else – but his home town of Liverpool.