There are now lots of resources available for children to access reading books online during this time.
Many of the sites require you to sign up but they are free to access books once you have done this.
The Oak Academy are offering the opportunity to have access to a different book each week.
https://openlibrary.org/collections/k-12 - free to sign up and access books
https://www.oxfordowl.co.uk/for-home/find-a-book/library-page - free to sign up and access books
https://www.vooks.com/ - free trial available
https://www.lovereading4kids.co.uk/ - free to sign up and access books