For overseas ATM withdrawals: Monzo (After 18th December): £200/month, 3% thereafter (https://monzo.com/blog/2017/10/17/atm-limits-announcement/ https://monzo.

For overseas ATM withdrawals: Monzo (After 18th December): £200/month, 3% thereafter (https://monzo.com/blog/2017/10/17/atm-limits-announcement/ https://monzo.com/blog/2017/10/17/atm-limits-announcement/) Revolut: £200/month (£400 with Premium), 2% thereafter Starling: No charge Not sure about any of the other challenger banks, I've only used Monzo on a regular basis.