If you’re looking for free children’s activities, The Wild World Heroes Summer Reading Challenge runs until September 25 for 4 to 11-year-olds.

• Ten things to do under £10 in Southampton

This year the Reading Challenge has teamed up with World Wide Fund (WWF) for a nature-themed challenge to inspire children to “stand up for the planet”.

Wild World Heroes live in Wilderville, “a pretty cool place, but there are lots of things that the Wild World Heroes can do to make their town even better for the people and animals that live there”.

“Simply visit your local library and pick up your Wild World Heroes Collectors folder and stickers in a pack. Then when you’ve read or shared 6 books you can pick up a second celebration pack which includes your certificate and medal!” said the city council on its website.

Karen Napier, CEO of The Reading Agency, which organises the challenge, said: "We are really delighted to announce WWF as a partner for this year's Summer Reading Challenge ... climate change and the environment are subjects that children are keen to explore. We hope that this year's theme of Wild World Heroes, chosen by children and public library colleagues, will help to open up important conversations and inspire children and adults across the country.

More details about the scheme in Southampton on the City Council’s site. 

• Ten things to do under £10 in Southampton