Just William – And Richmal Radio 4, 4.30pm

Martin Jarvis (right),

Neil Gaiman and

Caitlin Moran are just some of the fans helping presenter Edward

Rowett celebrate the centenary of Richmal

Crompton's books. Janet Ellis reads excerpts from them.

Sunday Night Is Music Night

(Radio 2, 7pm) marks the 25th Cheltenham Festival with a concert featuring performances from stars including Gregory Porter, Paloma Faith, Tommy Blaize and Joe Stilgoe.

In Stephen Bailey: One Of Many (Radio 4, 7.15pm) the comedian turns the spotlight on those who share his name, including an investment banker and Axl Rose's stepfather.