not clear exactly what you want to do ...uk banks are an expensive way to send money to foreign banks , presumably in their local currency ; do you want to do this regularly , like a standing order ? if so , set up a standing order to somebody like currencies direct who will give you a better exchange rate and not charge you the usual electronic transfer fee of 20/30 euro's
or maybe you want something else , in which case you will need to be specific , like from uk current account to eurozone current account at irregular intervals ; why does this have to be internet for example , why not a telephone instruction?
what sort of sums involved can affect your cost ; one think is for sure , you won't get a good deal through a bank in uk , if that is what you are proposing