Here you will find lots of children's books which are free to read , or listen to the audio version ;
https://www.oxfordowl.co.uk/for-home/reading-owl/library-page
Here is a link to storytelling pages ;
https://home.oxfordowl.co.uk/storyteller-videos/
and also here is Blackburn Library... they are offering free eBooks and magazines for all of the family ;
https://www.blackburn.gov.uk/libraries-and-reading/e-books-and-e-audio-books