For example, the phrase “50% up to £100 free bet” means that if you make a deposit, the bookmaker will match 50% of your deposit amount as a bonus (free bets), up to a maximum bonus amount of £100. So, if you deposit £200, you will receive a bonus of £100 (50% of £200, which is the maximum bonus amount), and if you deposit £100, you will receive a bonus of £50 (50% of £100, which is below the maximum bonus amount).