Arranged overdrafts
An arranged overdraft is a set limit we agree with you (after you've successfully applied). The limit then lets you spend more than you actually have in your current account. This might be on things like paying a bill that you'd forgotten about just before pay day.
As an example, if you have an arranged overdraft of £100 and £50 of your own money in your current account, you could then make a payment of up to £150.