You can withdraw money from your debit card at ATMs around the world. Look out for the Visa or Mastercard logo on the ATM depending which type of debit card you have.
The maximum amount you can withdraw at an ATM per day is £300.00 on the Premium scheme or £500 per day on the Premium Plus scheme.
Be aware that not all ATMs are free to use. Some smaller in-store ATMs charge you to use their service, however, they do state the costs before use.
You can also get cashback at stores 3 times a day that offer the service when you make a purchase. You can get up to £50 per time.