Amp rating of switches.

[Neale]

Personally, I would go with the Maplin toggle switch or equivalent. At least it's rated for 240V AC use, and you will be using it well within its max ratings. The 12V switches aren't necessarily going to be safe for mains use. And an amp isn't an amp when you're comparing AC and DC! With DC, as the switch contacts open, you start to get an arc forming that will continue until the contacts have separated enough stop the arcing. This leads to damage to the contacts fairly quickly, and you need a switch rated for DC operation as it will have some kind of mechanism to stop the arcing. However, with AC, even though it might start to arc as the contacts open (if you do this at the peak of the cycle), as the current drops towards zero any arcing will stop anyway, and by the time the voltage is swinging the other way, the contacts will probably be far enough apart that no new arc forms. That's a pretty simplified explanation, but I hope it helps give a bit of insight in a hand-waving kind of way

(overlapped with Clive but at least we agree!)