Just booked my LCR in for its 20k service at JP Board in Bridgend. They are a Seat Specialist (ex. Seat dealer), follow the same service schedule & use genuine parts etc.
Used them before for parts, front brake pad change & 10k service. Excellent service, staff are friendly & knowledgeable.
They quoted £150 including an upgrade to fully synthetic oil.
I don't need a brake fluid change, Bill @ Badger5 did that for me not long ago, along with discs & pads - besides, the car's only 18 months old anyway.
They don't supply a courtesy car, but they're located in the centre of town so I just see it as 'free parking' while the missus drags me around the shops!
lol
Nearest main dealer is Whitedove in Cardiff. From previous experience and horror stories from other people who have used them, I steer well clear!