There are several websites that can do this. Try this one:
http://www.confused.com/vehicle-check
You have to pay to get more details (like has the vehicle been stolen, any outstanding HP etc.) but it will tell you the basics i.e. make, model, colour etc. free of charge. Worth a try. I once got a parking ticket which had my registration plate details correct but on the ticket it declared that my vehicle was a van - only I had a motor bike! The parking attendant had put down the wrong registration details!