A Dual action polisher I recommend

[The-Acre]

If anyone is considering a dual action polisher, I bought a GMC (a budget one) and I have to say it's excellent.  I didn't know it when I bought it, but it turns out to be a best buy according to Autoexpress.  It's about £85 and comes with three sponge polishing pads and a very decent zip up bag for storage.  I went over the whole car today, soooo much quicker than doing it by hand!  Being dual action it's brilliant for the novice such as myself.

[rayaans]

Argos are doing one for £54 with 2 year guarantee and that's good too. 

DAs are pretty much all the same apart from vibration and noise characteristics