Hate to say it, but a MK3 Mondeo. Aim 54plate ~ £2.5k, ~100k miles. Diesel of course - 150, 130 or 110bhp.
Cheap enough as they're common as muck being fleet vehicles. Spares are common for the same reason. Nice big hatchback boot and Ghia/Titanium models come with all the creature comforts. Good MPG too.