I don't know if any of this info will be helpful, but after reading this thread I looked into this and this is some info I found at least for me for primarily a HSE gas build and here in the US
Back on 4/22 I did a web build off the US site and saved it to a pdf to send to the sales person I am working with so I could get some hard numbers for my choices, and I can't remember if it was from the beginning part where you choose stuff from the Exterior View, or later in the Optional Features section when I chose the Vision Assist Package, but for that part in the pdf file I saved, it listed for one part of that package "Adaptive LED Headlights with LED Signature Auto High Beam Assist (AHBA)" and the packages total cost was $1,200.
I just redid these yesterday as I wanted to look at pricing either a 5 or 7 seater, and I noticed in those for that same section now it reads only "LED Headlights with LED Signature Auto High Beam Assist (AHBA), and as well for the whole package is only now only $1,000. As well btw does not show as part of the package at the place you select that.
Also to note, while your UK build site seems to still show that headlight option in the Exterior View part, ours currently does not.
So next I went to the Sales Brochure and on page 89 for me under the options for the Headlights and Lighting section, for the HSE and HSE Lux, the straight LED is standard under option code # 064GK, but then next is the Adaptive LED which is under option code # 064GJ, which does come with 2 notes one of them being is only available with the Vision Assist Package.
Oddly, later under the section for the option packages on page 99, it shows the options code # 041CB for the Vision Assist Package and that includes the Adaptive LED.
In getting back to your UK site, again you can pick the Adaptive in the beginning, but then later it also lists that at least for the HSE as part of a Technology Package, which if you don't pick that shows the Adaptive in the summery for a cost, but then if you do is just lists it as LINK in the same section at the beginning and then as part of that package later.
Interestingly in the UK brochure on page 89 there are some slight variations to what I just described above in mine, then on page 101 for the package options there are quite a few variations which are kinda to much to list here so I might suggest you pick one up or download it from the LR site, but one odd one to point out is for the Vision Assist Package as even though it lists it as part of the package there is also a note numbered (3) that then has for part of that note at the bottom that reads, "Adaptive LED headlights with LED signature only available with signature hi-line tail lights"
Guess my overall point to all this is, it kinda seems possible under certain conditions to get either or, and perhaps you can check your order or build sheets or window stickers or what ever else does show this info and see if you have the codes 064GK, or code 064GJ and see what you actually have, or if perhaps you have the package that is supposed to have that, that it defiantly list it or if they actually don't as you left something else out.
One thing I will say and I know that was a long post and even did not include everything possible, that the options for this car are huge and I'm really seeing how you just can't always rely on the salesperson how ever nice they may be to let you know all as often..they don't even know (or perhaps care). So you have to be the one to go over just about every little detail as for what comes with what, and what can get taken out if you chose this thing or another as the possibilities of either is vast and so you have to be really attentive to be sure you are getting things if you want them.
In the end just to say to me for any possible ways I have ever seen adaptive lights...they do move and via some kind of modulating motors as there just is no other way to have them operate in the seamless way as they would have to. So if LR came up with something new that works completely different, I would very interested to see how that happens.
Topix will list various options by name only, no codes are given , if you know your VIN number you can input it and vehicle will be retrieved, in the 'Vehicle Features' portion of the window, select the 'Show more vehicle features ' option, and a list titled 'Minor features', will open. Features are then listed.