The BFG by Roald Dahl is listed on both the Observer and BBC Lists.
The BFG is children's book about a little girl who discovers a Big Friendly Giant (AKA BFG). There is also other giants along with the BFG who are not so friendly, because they eat people. So the little girl convinces the BFG to take the bad giants down. This actually is a rather gruesome story for a child but as I read online it is the perfect children's book, although the making up of words does get a bit tiresome after a while. The story has clear cut morality issues and includes a heroine who is just your everyday kid. It is a good story for kids that parents do not need to be too worried about. Enjoyable, just not my cup of tea.