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