Just got this from BA!
"As from 1 July 2004, a direct service fee is charged on all British Airways tickets sold in Belgium and Luxembourg through our Reservations Call Centre and at the British Airways Ticket Desks at the airports.
The service fee is based on the type of service offered regardless of the destination and means of purchase.
For e-tickets booked and purchased via our telephone reservations a Euro 10 service fee per ticket applies. On request a paper ticket can be issued against an additional fee of Euro 25 per ticket.
No service fee is applied on tickets purchased online, offering our customers who choose to book and purchase their tickets on their own on
http://www.ba.com the possibility of benefiting of our best fares."