The Booktrust has some really useful tips on how to read with your child (especially the pages Reading With Your Child, Encouraging Older Children to Read, and Tips For Reluctant Readers: https://www.booktrust.org.uk/books-and-reading/tips-and-advice/reading-tips/how-to-read-with-your-child/

The LoveReading website contains recommendations of books to read with your child: https://www.lovereading.co.uk/