Im hoping they deliver on Saturday, my experience is Apple Pay for a Mon to Fri delivery. I've looked at the online stores and the next window for the Max's to be picked up from the store is Tuesday, which makes think it'll Monday for us :-(Here's my thinking and from past experience, if our MacBooks are on the BOX509 flight and gets to Leipzig around 9-10pm local, there should be a flight from Leipzig to East Midlands around 2-3am and be in the UK by 4-5am.
In the past my Macs have been delivered the same morning they take off from Leipzig so we could see deliveries tomorrow if DHL deliver on Saturdays which im sure they do.