This week's top-ten supplied by Waterstones

BEST-SELLING HARDBACKS

1 (-) Dude, Where's My Country? by Michael Moore

2 (1) Monstrous Regiment by Terry Pratchett

3 (6) Midnight by Jacqueline Wilson

4 (10) Heretic: Grail Quest S by Bernard Cornwell

5 (-) Crap Towns: The Top 50 Crap Towns in Britain

6 (-) Ricky by Ricky Tomlinson

7 (2) Pompeii by Robert Harris

8 (3) My Side - The Autobiography by David Beckham & Tom Watt

9 (5) Harry Potter And The Order Of The Phoenix by JK Rowling

10 (7) A Short History Of Nearly Everything by Bill Bryson

BEST-SELLING PAPERBACKS

1 (2) Life of Pi by Yann Martel

2 (1) The Lovely Bones by Alice Sebold

3 (3) The No 1 Ladies' Detective Agency by Alexander McCall Smith

4 (4) The Little Friend by Donna Tartt

5 (5) Night Watch by Terry Pratchett

6 (7) Tears Of The Giraffe by Alexander McCall Smith

7 (6) The Crimson Petal And The White by Michel Faber

8 (7) The Sexual Life Of Catherine M. by Catherine Millet

9 (10) Samuel Pepys: The Unequalled Self by Claire Tomalin

10 (-) Baudolino by Umberto Eco