Fraser - i've used them before then.
Was maybe about 2 years ago now, they painted the drivers side of my Pug 307 (apple green) - it was a shade out afterwards. They tried a 2nd time (refused to refund me) and it was still a shade out. Again, refused to refund me but did offer to give it another go - they got some rep. in from the paint manufacturer and this time they painted-up shade cards (3 of) which were a huge help - one was spot-on.
Turned out that, for Peugeot anyway, there is never just one exact shade - some cars leave the factory with a touch more yellow in them, a touch more orange etc. So the paint manufacturer rep. guy said there was actually 3 paint codes for my car - the one with a drop more yellow was the one that suited my car.
So they painted the car with this shade & it was fine.
If you go back to them, make sure you get them to ask the paint rep. for ALL the codes for your car, and ask for spray-cards to be made up - this made a big difference in my case.
The wee audl guy with the huge beard, to give him his due, could have just washed his hands of it after the 1st attempt but he was determined to get it right - the 2nd & 3rd attempts were both at his own cost.
Andy