I bought the used clio from a dealer, i mentioed the prices of the clio on the internet and they could not get anywhere near.
The internet prices are well cheap, and its money better off in your pocket. Some of the retailers online take your car in as p/x. Some deliver to renault dealers too, so you could in theory collect it from your local one. They are uk cars, and come how you want, tho i think they are 12 weeks waiting list as everyone else.
Consider that you may pay full price for one from the dealer,but from the internet its the savings from driving the car off the forecourt, so in theory you could sell your car for not much less that you paid for it to someone without the knowledge.
You get the same deals are you would from the dealership, and full warranty. I believe a deposit has to be paid on order, and balance on the car turning up.
Give the internet sites a go, i found 4 or 5 sites, 2 that would take p/xs and use that against the dealer on a deal.
Alias