Hi and welcome to LOC.
The Leicester dealership is excellent, have a read in the dealer review section to learn more.
You should not have any real concerns ref the car as it will still be in warranty but check for corrosion on the wheels, on the rear disc hubs, stone chip damage on the front.
What year of car are you looking at buying?
There are a few of us from around Leicester and the midlands, you should come along to a meet to check some of the cars out.