They have three albums, the first is 'Take To the Skies', 'Common Dreads' and the newest 'A Flash Flood of Colour'. From the second, they have a more definite strong political theme running through their lyrics. They're great at mixing electronic and a dance feel with the heavy side of music. The first album has more screamed vocals but after that the vocalist changes slightly to incorporate more of a spoken English accent scream type thing. They're really great though.
I'd recommend 'Anything Can Happen In The Next Half Hour', 'Solidarity' and 'Arguing With Thermometers'.