We would recommend many of the provide of car checking services,r but the car you are ready to buy I would always says make sure that the site offer insurance .So pay a little extra to protect you newest asset.
There are a few companies in the UK now offering car checks but beware as not all car checks are made equal.
There are only 2 companies in the UK who have access to outstanding finance data and they are experian Autocheck and hpi. There is a site that gives more info and shows who currently has the best offers on http://www.carcheckuk.co.uk