Hi Phil.
As per the last post,I have just organised the same thing for a payment at the end of the month with Currency direct.But just be aware that the setting up of a direct debit takes time,this is only for the regular monthly payments.
If you open an account online they will contact you directly and you can arrange to pay your first payment via your debit/credit card.
The rate was 1.24 against a mid-rate of 1.26 which only equates to £6 on my mortgage,as opposed to my bank wanting £12 to transfer the sterling,then whatever the CAM bank would charge after that.
If you need to make a payment at the end of the month contact them soonest.
John