1st even if you're taking cash, take your debit card in case of emergency.
If you used your debit card then your bank will usually charge you a fee e.g. Natwest charged me about £10 to take out £200. But it is definitely a safer option than bringing a lot of cash however i ran the risk and saved a lot of money by not withdrawing cash and alhamdulilah I was ok
Iv never seen a Lloyds or a Natwest branch there but I've seen HSBC and Citibank but you can use any banks machine.
And Allah Knows Best