For each bookmaker Welcome Offer, you will need to place lay bets on a betting exchange.
Betfair Exchange is by far the most popular betting exchange in the UK. Betfair Exchange is simple to use and they will often have the best lay odds compared to the other exchanges.
Betfair Exchange offer 0% commission for your first 30 days, up to £50! So simply for every penny in commission you pay, you will receive this back, up to £50 commission!
Your 5% commission is refunded to you every Wednesday, based on your lay betting from the previous 7 days.