Here's a recommendation from Sonya Hartnett to read Ursula Dubosarsky.
"No children's author in Australia writes as gracefully as Ursula Dubosarsky, and Abyssinia (Viking) is a fine example of her delicate, gem-like work. The book reads like an enigmatic dream, full of reflections, mysteries, twists and turns. A novel for younger teenagers (particularly girls) who are clever enough to deal with something unusual..."
Unfortunately, the book recommended is not available in the UK, but anyone who has not read Dubosarsky is missing one of the unique voices of contemporary literature. So why not give this one a try: