For some reason, I had expected the delivery to be from afar. Same day suggests it's coming from my local SC (Edinburgh). Wonder why they are bothering to deliver it? End of quarter madness?
They will probably carry out a thorough PDI at the SC before arranging a local flatbed to pick it up and drop it off with you.
(When I mean PDI, I mean the standard Tesla PDI, which seems to consist of one check box - Does it switch on and drive? ✔ )