Things to do in the next 24 hours . . .
Ant and Dec present the third live semi-final of Britain’s Got Talent in front judges Simon Cowell, Alesha Dixon, Amanda Holden and David Walliams. Which hopefuls will impress the voters at home? ITV1 from 7.30pm. Help the Ferry Meadows Country Park rangers with a conservation task tomorrow. The volunteer session (18s and over) runs from 1.15pm to 3.30pm. Tools and gloves will be provided. Call 01733 234193 to book a place. Monty Python’s Spamalot is at the Cambridge Corn Exchange all this week. The show features the hilarious song Always Look on the Bright Side of Life. It’s on at 7.30pm tonight and 2.30pm and 7.30pm tomorrow. The Marvel’s Avengers Assemble film continues to impress cinema-goers across the country. It’s on, in 3D, at Peterborough Showcase Cinemas at 2pm, 3.45pm, 5.05pm, 7pm and 8.15pm today. Liverpool welcome Chelsea to Anfield in the Barclays Premier League. The Reds have won their last four league meetings with Chelsea, but the Blues beat them in the FACup Final. Sky Sports 1 from 8pm.