Yes, I have also noticed that these questions tend to come in waves. We know the ticketing team works in priority order of date of travel, and on any given day it's those flying today have to be dealt with first. And while "travelling today" never ever goes away, it just gets a lot worse if there are irrops when without notice thousands of complicated tickets need to be processed. Those travelling in the future are then processed in date order and it's not unusual for the team to be stuck on 5 days from departure for a while. I did read that BA had made some minor changes for Sterling and Euro transactions which may have helped here (more onshore staff basically). But I suspect this is only as good as the distance between avalanches.