Cuba operates a dual currency system. Visitors use the Cuban Convertible Peso (CUC) and locals use the Cuban Peso (CUP). You can exchange Sterling or Euros in cash or travellers cheques, Scottish and Northern Irish bank notes can’t be exchanged. You cannot use American Express travellers cheques or credit cards and US Dollars are not accepted as payment for goods or services. You can exchange US Dollars but there is a high commission fee.
Check with your bank before you travel to confirm that your debit and credit cards will work in Cuban cashpoint machines. Cirrus or Switch cards are generally not accepted in any cashpoint machines. All credit card transactions are subject to local commission charges.
There are a lot of forged bank notes in Cuba so it is advisable to only exchange currency at the offical exchange desks in the airport, at your hotel reception or in banks.