My wife got a call last night at 8:30 to confirm that her passport upgrade request has been accepted. Got told we would have to pay additional £101 and that the passport would be ready to collect from our nearest passport office the next day. Honestly thought we wouldn’t manage to get the passport, as that’s been nearly 2 weeks calling, but once I spoke with the progression team (requested a call back and eventually getting a call) they were very helpful and managed to get the ball rolling with the upgrade. Hope anyone else in the same boat as us, is successful with getting there passport back in time. They do leave it last minute, but seems they don’t look at upgrades until 48 hours before flying.