Originally Posted by Imperial Special
BA85 is operated by a Boeing 747-400. You can see the configuration by comparing the seating chart at OLCI with this web site
http://www.seatguru.com/ which provides charts for BA aircraft. Others may be able to advise on the best Y seats.
More specifically, flights to Canada are usually operated by the 747 with 38 C-class config:
http://www.seatguru.com/airlines/Bri..._747-400_A.php
The best Y seats are 29A and 29K -- you get both the benefits of a window seat and also the benefits of an isle seat (you can get out of your seat without disturbing anyone as there is no 28A/28K).