With this budget we would recommend something like the Honda Jazz. £11,000 would get you an example around five or six years old with low mileage. It's an ideal car for for short journeys and is easy to park because of its size, but it's more than capable of doing longer journeys, and its excellent interior space makes it easy to get in and out of. It also has an excellent reliability record. Alternatives include the Ford Fiesta and Volkswagen Polo, and while these are very capable rivals, the Jazz beats them in terms of practicality.