The long-running and beloved Discworld series by Terry Pratchett might not have been such a success if the author hadn't made this key change. Mort gets taken on as Death's apprentice in Mort ...

The author, who lived in Wiltshire, wrote 41 books in the Discworld series, the last of which was released after his death in 2015. The set of eight stamps will go on general sale on 10 August.