Originally Posted by
Sixth Freedom
If you have not been on the upper deck before then I would say you should do it now because you never know when the increasingly rare 747s will be withdrawn from your route.
At the moment (and on the assumptions that the OP and his wife would like to sit in adjacent seats and that the flight number is actually BA
179), this is academic because on their flight, the only UD seats available for purchase by someone who has to pay are 60B, 63J and 64B.
Worth keeping an eye open on this, though - the situation can change.