Thanks all.
I'm corporate so will be flying an airline home for some work back there. No uniform with me here so I'll just have to load up on paperwork, take crew ID and get a Covid test prior, and cross my fingers! I was more concerned about UK Immigration having an issue, check in staff at departure hadn't crossed my mind! I'll make sure I'm well prepared with plenty of paperwork printed out!
Thanks again. Won't be happening for a few weeks but I'll post here with an update.