Imagine: An A-Z of the OED

Arts series presented by Alan Yentob, who this week investigates the heroic, bizarre and sometimes tragic history of the Oxford English Dictionary, beginning the story at the height of the British Empire and following the making of the dictionary up to the digital age. The trail takes in a cast of thousands, including novelist Julian Barnes, poet Benjamin Zephaniah, many eccentrics, a murderer in Broadmoor and author JRR Tolkien