I checked uniquemagazines.co.uk and it's also showing the Nicole Kidman cover, which suggests it's a general importing issue affecting this magazine, and not a case of newsstand.co.uk dropping the title.
At this stage, I can see it skipping an issue and going straight to the current one as the next one available.
There seems to be no problem with the supply of US Vogue, and the Nov 21 issue of US Elle is available.