Talking about wider reading in CS personal statement?

Hi, I'm seeing mixed opinions on writing about wider reading for computer science. I would have thought that it'd be better to focus on hands-on things like projects and work experience because the subject is a practical one. I haven't mentioned any reading - I am talking about 2 essay competitions and a course to show I have done research into the subject and learned about things beyond the curriculum, but as I am applying to some top unis where a more mathematical/theoretical approach is preferred I am wondering if this is enough? My teacher references do include the books I read but not sure if that is sufficient