I am on a mission: to help support and promote fellow authors of children’s literature by reviewing them on this blog. I am looking for book recommendations with certain criteria:

Books that you think are brilliant but maybe are not very well known and that could do with a boost
I am especially looking for the reading age group 8+,  as it is a time when children can read a book for themselves but this age group seem to have less books available than younger children or Young Adult.
Books that have a spiritual depth. I don’t necessarily mean religious content, but books that inspire a child to think about their world, their relationships with others and of things beyond their normal lives. Examples are Phillip Pullman’s trilogy ‘Dark Materials’ or C. S. Lewis’s ‘Narnia Chronicles’. Its a very vague description I know, but I suppose it is what you might categorise as ‘Mind, Body Spirit’ children’s fiction. However it can encompass any genre: Sci-fi, magic, fantasy, realism.  Just explain why you think it has that spiritual depth.
I need to be able to borrow them from a library, so they must be available through the British Library lending system (PLR) unless someone, perhaps the author or publisher themselves, would like to send me a physical copy or e-book copy. Please contact me for details if so.

I am greatly looking forward to your recommendations, thank you!