Blue Square

Blue Square has grown rapidly to become of the UK's favourite online bookmakers / sportsbooks. Part of Rank, a major entertainment company, this fixed odds betting service welcomes new clients with a free £25 bet.

Coral

Coral's betting site covers a broad range of sports and specials, including a live betting facility for placing bets on events that are already under way. You can also use your account for poker, games and their online casino. Free £10 bet.

UNIBET

Unibet offers a wealth of sportsbook markets, including football, American football, baseball, basketball, boxing, golf, horse racing, ice hockey, rugby, tennis, volleyball and winter sports. You can also use the same account to play casino games, poker, skill games, scratchcards and betting on your mobile phone.

Party Bets

Join Party Bets for sports betting including betting during live events. You can also use your Party Account to play at their online casino and poker room plus bingo and backgammon sites. Get a free bonus of up to £25 on your opening deposit.

Stan James

One of the first sports bookmakers to offer betting in-running (during the course of an event, after it has started), Stan James still leads the market with its wide range of live betting markets. Offers a free bet of up to £25 for new clients.

Bet Direct

Bet Direct strives to offer the widest range of betting markets together with regular cashback and promotional offers for its clients - including on football, rugby and horse racing. New customers also receive a competitive £50 free bet offer.

Better Bet

One of the newer faces in the world of betting, London-based Better Bet was launched in 2005. As their name suggests, they aspire to offer better odds and offers than other bookmakers, whilst covering a wide range of sportsbook and other markets. Bet £25 or more on your first bet to get a £25 free bet.

Betfred

The UK's largest independent bookmaker, self-styled "bonus king" Betfred offers more ongoing bonuses and consolation rewards than any other betting site - in addition to a £25 free welcome bet.

Totesport

Bet online with the Tote's own site, which includes totepool horse racing betting as well as a host of other sports and specials markets. New sportsbook customers qualify for a free £50 bet. You can even win without backing a winner!

Extrabet

Extrabet is an online bookmaker with a difference. You can place a bet as normal. Then, as the event you've bet on unfolds, you can check to see how much you could bank as winnings at any point in time - taking them as and when you wish.

William Hill

One of the world's leading and best known bookmakers, William Hill offers secure online betting on sports, specials and racing - including live betting in-running and 24/7 customer support.

Sporting Index

Regulated by the Financial Services Authority, Sporting Index offers sports spread betting - a higher risk alternative to fixed odds betting. You can win or lose much more than the value of your stake based how accurate your predictions are.

Capital Spreads

A spread betting operator specialising in financial markets, Capital Spreads offers competitive pricing and an automated stop-loss facility, to help limit your downside risk. There's a handy user guide and interactive demo for beginners.

Betfair

Betfair is a betting exchange rather than a bookmaker. This means that you bet at odds offered and agreed between you and other members, which could be up to 20% better than odds offered by traditional, fixed odds bookmakers.

Offers a free £10 bet for new customers

BETDAQ

A leading online betting exchange, BETDAQ allows members to bet for or against outcomes at odds that they agree between each other, bypassing the bookmakers and their profit margins.

Best Of The Best

This unique "spot the ball" competition site offers chances to win genuine supercars. £20 buys a single entry, or you can buy extra entries at a lower average cost. In the last 6 years, winners have received over £7m worth of cars. There's also a lower cost, instant win competition with a £10K prize.