Well, got my Q7 back from the Leeds Audi dealer today. FANTASTIC! They have replaced the 2 front tyres and done the 4 wheel alignment aswell as replaced the rubber seals under the front doors! These were getting tatty and starting to stick out at the bottom of the doors. I didn't even ask for this to be done! Any way all work done under authorisation from Audi UK at no cost to me. Great result!
Best advise is that if you need something doing under warranty, call Audi UK yourself first and get them to give you authorisation BEFORE taking it to your dealer. And always get some sort of reference number and the name of the person you speak with at Audi UK.
Their link is
Audi UK > Customer Service > Contact Us
Their contact number is 0800 699888.
Hope this info is helpful......