If you're looking at a medium-sized family car, then the Honda Jazz is probably a bit small for your needs, although it is very spacious for its size.

For £2000 you'll find lots of examples of the Ford Focus, which is cheap to run and repair with plenty of parts available. Go for a car with a good service history that has been well cared-for and it should make for a reliable family car. Alternatively we found a few examples of the Toyota Auris within your budget, which has a very good reliability record, or the Skoda Octavia, which is even bigger inside.