who are easily one of my favourite Screamo bands of all time, combining some of the most raw, impassioned and anguished dual vocals in the genre with guitars that switch from restrained melody to unchecked chaos several times within the space of one song.
More importantly they've uploaded a large portion of their back catalog to their site so you can check them out for yourselves.

http://www.stormthebastille.net/

For fans of: Jerome's Dream, Joshua Fit For Battle, Maths and pg99