I've just found a good site that gives live updated Grand National odds that also includes the best price from a selection of bookmakers. Along with tips for the big race from Aintree and background information on the trainers, jockeys and interesting stories associated with the race.
If you've never heard of the Grand National then read on... The Grand National is England's most popular horse race. This year a million pound sterling awaits the winning jockey and trainer. Statistically only 10 or so horses will have the stamina to finish the punishing course which has 30 jump fences and is run over a four mile course.