Strange, I'm from that area and I literally saw the first one in the wild today since when I ordered my own about 2 months ago!Lot of people talked about this subject here but it seems to be according to your location, some (like Milton Keynes) have loads others have none.
You'll see more Seats in the Milton Keynes area and ergo more chance of a Cupra as that's where the offices of Seat Uk are. The normal ones are the standard company car scheme ones, my Cupra came from someone a bit higher up with more allowance.
Otherwise there's a few of us cupra hatchback and ST owners between MK and Cambridge I've seen.