Kapten offers bonuses of up to £15 during peak periods. These bonuses normally require you to unlock them by completing a certain number of rides. For example, a bonus of £5 after 3 rides means that once you have completed 3 rides you will earn £5 on every trip after that during the allocated time slot.
The bonus amount, ride target and time period will change regularly. You can check what bonuses are on offer by checking your email or going into the ‘Bonus’ tab in your app menu.