Arnold Clark are actually not too bad, I took a Focus out to test drive before buying mine (from the main dealer) and apart from the obligatory email with the 'walkround' video that I ignored I never really got hassled, just said I was looking at a Focus and wasn't sure if to buy or lease and he was happy for me to take it for a spin.
Car Supermarkets are the best place to go if you explain you've got an idea of the cars you've shortlisted and if they have them in stock shouldn't be an issue taking them out for a drive as you can't surely make up your mind if you haven't tried them, you don't have to buy from them but make them think you will so they'll let you take the vehicles out.
My brother wanted to test drive a Toyota from a main dealer recently and they wouldn't let him unless he agreed a deal and put down a deposit before hand, I laughed and said I'd have walked straight out which is what he did coincidentally.
Car Supermarkets are the best place to go if you explain you've got an idea of the cars you've shortlisted and if they have them in stock shouldn't be an issue taking them out for a drive as you can't surely make up your mind if you haven't tried them, you don't have to buy from them but make them think you will so they'll let you take the vehicles out.
My brother wanted to test drive a Toyota from a main dealer recently and they wouldn't let him unless he agreed a deal and put down a deposit before hand, I laughed and said I'd have walked straight out which is what he did coincidentally.