Betfair Sportsbook and the Betfair Exchange both have amazing offers which can be highly profitable for someone who knows how to take advantage of these lucrative offers. Some offers may include bet £10 get £10 or can be more complex but also more profitable like the Betfair Arcade offers or the Betfair Casino offers which can range from £10-£100.
Paddypower are a major player in the promotion game and can offer amazing offers both online and inside their betting shops these can be as simple as Bet and Get offers or payouts if your horse comes in second. They also offer great casino offers and can really fill your pockets with promotion money.
Bet365 are a classic who offer the legendary Bet £50 Get £50 free bet. They are some of the most generous bookmakers out there and can leave you well off in the long run. They also offer the 2up promotion where they pay out a football match early as soon as your team goes up by two goals or more. They really are one of the best at promotions.
The LeoVegas Group have some of the biggest online casino networks out there. Their network sites offer proper casino offers where you can generating really good income each month.
Skybet offer some really great horse racing offers and also really great casino offers. These can usually be daily and weekly depending on the offer.