I think because it wasn't issued/exported to the UK ??
As goes with more options, I noticed over the years reading this forum.
Including my 4 wheel drive
My
Cupra has full leather interior (which includes everything inside,
up to the door boards).
Front seats are electrically adjustable, in all directions (with memory) and
are heated.
Our
Cupra R's have this ugly Recaro interior made of cheap fabric
with a little bit of leather on the sides.
And in the R it is not possible to choose any other interior (!!)
That's the main reason I did'nt want the R