I was on a transatlantic flight flying business class and the inflight entertainment was not working. The flight attendants came around at the end of the flight with a form and asked if we wanted to complain. I filled out the form and expected to hear nothing. Instead, in the mail, I received vouchers for 80 pounds of inflight duty free purchases. I spent 50 on a bluetooth earpiece and software to be able to use this with my computer. I tried to spend the other 30 but they didn't have the items on the plane the items in their catalog that I wanted. I'll have to fly BA again soon anyway, so no big deal.