Hi Looking for inspiration He has done Harry Potter , outgrown David Walliams , world of norm , diary of a wimpy kid He can handle some “grown up “themes ..for example he has recently finished John Boyne “ Boy in the striped pyjamas”
My side of the mountain Wildwood and Under Wildwood Skellig and part 2 My Name is Mina
Trying to remember the name of a series, might be called Wolf spirit, by Michelle Pavier I think. I thought they were about native Americans but they are about ancient Britain when there were bears and wolves about. The author has really thought about what life would be like with the earth as the only resource. Lots about tribal life and hunting but with respect for nature.
Depending on his interests, how about: The Eagle of the Ninth (and sequels) Weirdstone of Brisingamen (and sequels) His Dark Materials series Good Omens Goodnight Mr Tom Floodland Neverwhere A Begonia For Miss Applebaum A Short History Of Nearly Everything