Finally bought my first grinder! After doing some research I opted for the Hario Mini Mill. I've only used in once, and so far I'm very happy with it. The grind had a good consistency and I quickly found a sweet spot for my french press. The grinding itself was mostly smooth with the occasional jerk and twitch. Took about a minute to grind about 20 grams of coffee.
After reading around a bit I've found out that the slight wobble in the grinding mechanism can be fixed with a bit of tape, improving the grind consistency, so I'm going to try that later and report back. For the £32 I paid I'm very pleased with this grinder. Perfect for someone like me that only makes coffee for myself once or twice a day.
Oh, and I don't think I'll ever go back to buying pre-ground beans if I can help it. The difference in taste is pretty amazing.
Edit: I put some tape around the main shaft and the outer burr which has reduced the overall wobble. The consistency of the grind seems improved, but as this was only my second time using the grinder it's hard to tell; I might be fooling myself. Bottom line is that it produces a consistent grind, anyway.