Originally Posted by AJA_

As for a refund I definitely think that you should be refunded on the basis that you chose seats with specific numbers. If you get allocated seats with different numbers because of an operational decision by BA to change the plane you didn’t get what you paid for.

I don’t think you should get a refund if you prepay but then you change the booking but anything done that is out of your control should make seat fees refundable.

I also think it should be BA's responsibility to seat passengers travelling together on the same PNR together, especially so if you've paid BA extra to do that.