I haven't been to individual specialist. I wasn't impressed with city centre car care after my door had a half inch scratch and they wanted 500 quid as they 'had to paint' and blend the whole door.
I'm going to contact individual at some point next week to see how much they will quote.
I had the same response from both ISC and CCCC, they wanted to paint and blow into the rear door and roof!
I have personal experience of CCCC from a previous repair to my wife's Phantom Black Audi A3 in 2010. It was only a bumper change but the paint match was good, the problem was how they cared for her car whilst in their possession, it came back covered in swirls and buffer marks as they attempted to polish out some scuffs they had inflicted on the rear doors, roof and bonnet

....Audi UK reimbursed her the full cost for a detailer to spend 2 days on a full paint correction detail

Had a quick look at your previous posts and I cannot believe how VERY similar the damage is to both your car and my wife's.........the drivers door damage is pretty much identical and the scratch you have on the rear quarter/wheel arch is the same place as the dent my wife has on her GTD and both cars are Pearl Black!
I wonder if we would get a discount if we took both cars in

Like yourself she is worried about insurance claims although she has protected NCB.
Did Jag repair your door scrape?