What should I look out for on a test drive?

Finding a decent used car is as much about common sense as mechanical knowledge. Trust your instincts: does it ‒ or its seller ‒ seem dodgy?
The Sunday Times Driving Placeholder

What is a "logbook" and how do you use it to buy or...

The crucial document is the V5C registration certificate, often called a logbook even though it is just a piece of paper.