Charge are British, based in Somerset.
They're a small company that put a lot of thought into their bikes. Most components that they put on their complete bikes are well chosen, whereas a lot of companies pick componenets to reach a price point.
They only use Cromoly or Titanium frames - best frames in my opinion.
As you can expect their bikes are a little more expensive than their peers, but you get what you pay for.
I have their Mixer bike and like it very much. I know someone who has a Duster and he also rates his bike highly.
When I rang Charge for advice beforehand they were very open and gave honest advice.