Hello Dale,
I think you are very ( should be in capitals) wise to question this before proceeding to buy. OK, free website checks, but you will be investing a fair amount of money in this purchase, so you will need to be sure - by possibly investing a little more in a paid for check - what this car is. Inform the checking company of your area concern, but I'm sure they will need the VIN number (in addition to the registration number ) in order to give you the full information.
If it were me, I would be contacting the dealer you are buying it off and asking them to e-mail you both the reg. no. and the VIN. E-mail rather than taking it over the phone so you have this in writing. I would then be ringing another dealer and asking them to check it on their system, before having a full paid for and printed-out check on this vehicle.
This is personal opinion only Dale, but would I buy any car on the basis of simply only seeing photos on a website anyway? No, I wouldn't - but that's me. I think you will find that if this vehicle is transported to where you are buying it and you don't then like something about it and don't buy it, then you have to pay the transport costs (both ways?). Investing that money in petrol to go and see it may be another non-committing option, or simply waiting for something more local to turn up.
Anyway, good luck with whatever you decide, but I wouldn't leave too much to luck!
Kind regards,
Gareth.