After the 40 acts are selected for the BGT Live Shows (7.30pm), Myleene Klass undertakes her yearly presenting gig. The ceremony from London's Royal Albert Hall, will be attended by the Duchess of Cornwall, with performances by trumpeter Alison Balsom, violinist Anne-Sophie Mutter, tenor Alfie Boe with the cast of Les Miserables, soprano Katherine Jenkins and Artist of the Decade recipients Il Divo. Shirley Bassey also gives a rendition of Goldfinger and leads a celebration of the work of John Barry, who died in January, and is posthumously honoured with the Outstanding Contribution to Music award. Milos, Alice Sara Ott and Vilde Frang are in the running for Best Newcomer, while Antonio Pappano, Jonas Kaufmann and Tasmin Little compete for the Critics' Award. More of a Lennon fan? The Day John Lennon Died is being screened at 11.45pm.