Hi Alex, not quite click and collect but I did buy a 2017 IS300h from an Audi dealer 137 miles away in December.
The process went like this:
I listed the spec for the car I wanted and did the usual trawl round various websites, no luck for a few weeks as I didn't want to compromise
Found what looked to be a perfect match at a Lexus dealer 50 miles away, called and arranged a test drive for when the early December lockdown was lifted, 10 day wait..
In the meantime, kept looking and found same spec car, much lower mileage but long distance away
Called the dealer, convinced him I was a serious buyer but I didn't want to drive that distance just to be disappointed by either the quality of the car or his reluctance to negotiate.
Dealer made an extensive video of the car and sent it to me, close ups of all points of interest
Called the dealer and we negotiated a price over the phone subject to satisfactory test drive, paid a £500 refundable holding fee
Made the journey, if the truth be known I was having the car before I'd finished watching the video
Test drove the car, did a bit of teeth sucking, told him I really didn't want a red car but if he threw in a tankfull of petrol I'd take it off his hands as he shouldn't have a Lexus in an Audi showroom. I absolutely DID want a red one by the way
Did the paperwork and drove home grinning from ear to ear, if anything the grin is even wider now
Not quite a click and collect, I couldn't bring myself to do it although if he'd have pushed me I would have done it as it was the perfect car and not an easy colour/interior combo to find
Long winded but hope it helps.