The resolution in the video isn't good enough to read the plates on the Lucid, although I don't see the red manufacturer lettering of the DE earlier in this thread. Looking at the Aston, though, I'm pretty sure it's
this car, KY23MTE. Number plate is grainy in this still but it's there.
View attachment 17374
And the placement of the white blob in this frame matches the UK sticker in the pic above.
View attachment 17375
According to the interwebs there are (at least) four 2024 Vantage coupes with this same camo:
KY23MVH,
MUA,
MSV and
MTE
So I would (again) speculate that this is Aston Martin playing to see what they've bought. Hope they had fun