I'm just completing an Amazon order: some books he's read but doesn't yet own, some specific requests from him, plus some new ones with recent positive reviews.
But I've a feeling I've missed something...? Possibly with a rave review in the Saturday Times recently...?
Any other suggestions welcome too. So far I've got:
Jenny Nimmo: Castle of Mirrors
Michell Paver: Spirit Walker
Rick Riordan: Percy Jackson and the Lightning Thief
Justin Somper: Demons of the Ocean - Vampirates
Stuart Hill: Cry of the icemark
Joshua Mowll: Operation Red Jericho