You can log in to Oxford Owl (it is free to register) where there is an eBook section with a range of free books that you can share and read with your child on a range of devices. There are even some RWInc books too...

"With a library of activities and resources for every stage of the learning journey, curated by the team at Oxford University Press, we are here with inspiration to help your little ones learn, grow and flourish at home, in the classroom and beyond."

Oxford Owl for Home: help your child learn at home - Oxford Owl