Sols: yes, Maurice is right about the Japanese cars (the Proton is Malyasian but uses a Mitsubishi engine block, I believe). My second car was a Mazda 323 which went like sh*t off a stick, was fantastically reliable, and surprisingly comfortable for a smaller car. Plenty of boot space, too. I had it at 2 years old, and drove it in Saudi for another six - only sold it on because I left the country. So, at 8, it was still going great guns, and a really safe, sound wee car it was. I can't abide all this dumping cars at 3 stuff - unless you do horrendous mileage, and the car's crappy, there's no need.
Don't know what functions you need from your car, though? If you need big boot space, for example, you can't get much roomier than Skoda's Octavia 1.8, with a very roomy interior and loads of reliability.
Just a word to some people: what's the point in telling Solerina your car cost over £8,000 when that's her limit?
It'd be more helpful pointing her to cars that are good and come in under that, if possible.
Sols, Google up Exchange and Mart, and go to their Used Cars section. You can then type in the price range you want, and the type of car you have in mind (hatchback, saloon, mini, people carrier, etc.) and that'll show you a whole range of possibles. It also lists dealers who you could find near to you, arrange for a few test drives, and see what feels good to you. For example, I think the Fiat Clio's cute, but I hate the way the steering wheel fits into the hand - that sorta thing! Good luck!