Betfair Sportsbook is a fantastic place to bet on the 2015 Grand National. Not only do Betfair offer a free bet deal for new customers, they'll also payout each-way bets on the Grand National to five places – giving you one extra chance to win.

Along with the traditional fixed odds service offered by Betfair, new customers can also take advantage of the Betfair Exchange, where you may find bigger odds available on many of the Grand National runners. The exchange also allows you to back horses to lose! However, I'd advise novice punters to stick with the traditional Betfair sportsbook before diving into laying horses on the exchange.

The free bet offer from Betfair works like this. Open a new account using the promo code ZSK531 and get a free matched bet on your first selection – up to a maximum of £20.

The Betfair website has a number of tutorials designed to help new customers make that important first bet. Betfair normally have the best odds in the business, which is why so many professional punters love the site. Today, Betfair is one of the world’s largest international online sports betting providers and has nearly 1 million active customers.