I had some interesting experiences with dealers over here - a load of them were just ridiculous in their sales tactics - would literally every other sentence say "so are you buying it now?", "so how about I get the paperwork started now", while not answering any questions

Or guys who didn't know the year or mileage of their stock but were still trying to 'close' the sale - utter sharks to be honest, old school 'salesmen' at their very worst.
Not to mention their consistent 'upselling' - I go in with a budget of $5-6k and they go straight to the cars in the $10-12k region
As it happens the dealer I went with was the one where they were the total opposite - offered a range of cars to look at, said I could test-drive any of them, to come back in a few days when they had refreshed their stock to see if there was anything else I wanted to try - just the complete opposite and if it was a tactic it worked
I don't know if you can do title checks like you can here (Carfax) but you can always ask the dealer for one and it tells you how long the car has been on the lot which is a useful bargaining tool. Over here it also tells you how the car was sold i.e. at auction or to the dealer direct. Ask to see the logbook/service history of course and judge the reaction.
Don't get emotionally attached to a car - and even if it's urgent try not to let that influence your decision - there will always be a 'great deal' out there.
Figure out your budget, and your 'extra-special over-budget' and stick to them. When you go in and they ask what range, knock £500-1000 off what your real budget is so you'll have a bit of movement.
If they promise to do any work on the car for the sale - get it in writing! And from my experience - if you're interested in a car - ask on here and there'll be someone who can tell you what to look for
