Hi @Stephie
Yes, you can set up a bank account with a different currency. However, this will need to be enabled first by going to Account Settings >> All Settings >> Multi-Currency Invoicing.
This will also allow you to invoice in a currency other than GBP too, and QuickFile will help handle conversions into GBP. As the base currency is GBP, these invoices will show in your P&L and other reports in their GBP value.
This guide should hopefully help, but please let me know if you get stuck 
Invoicing in foreign currencies