Originally Posted by
LTN Phobia
It may be another case of "call again". I would recommend you give BA a call again to see if you get a different answer, because it is quite possible (it should be just on the information that it is a T class).
However for a travel agent booking to be upgradable using Avios, you can't have another carrier on the booking. Do you have a non-BA flight in the same booking?
Are you sure you can't have other carriers?
I thought other carriers were fine as long as the booking was on 125 ticket stock. Or am I wrong?