03-01-2020, 08:25 AM
Mine made it through the customs part near Heathrow after a few days, but while I was waiting I read up a bit. Royal Mail staff on an unofficial forum say that the Customs part is essentially a black box to them - things go in and things come out, but while it's in there they don't hear anything about progress or problems. Normally things go through within a few days, but sometimes they disappear for weeks for no apparent reason. I hope yours reappears soon!