The August bank holiday event will be headlined by Queens of the Stone Age, Paramore, Arctic Monkeys and Blink 182 along with a supporting cast including Macklemore & Ryan Lewis, You Me At Six, Jake Bugg and many more.
Roach are part of a selection of bands completing the main stage bill along with Blood Red Shoes, Crossfaith, Dry The River, Pulled Apart By Horses, Gnarwolves, Young Guns, Tonight Alive and The Story So Far.
Over on the NME/Radio 1 Stage - headlined by Courteeners, Bombay Bicycle Club and Disclosure - Twin Atlantic have been added, along with Mallory Knox, Lonely The Brave, The Horrors, The Kooks and Twin Shadow.
Brody Dalle, Mongol Horde and Architects join Jimmy Eat World on the Lock Up Stage, while Band of Skulls, Palma Violets and Augustines have been announced as headliners of the Festival Republic Stage.
Also appearing across the weekend will be A Wilhelm Scream, Baby Godzilla, Bear Hands, Bipolar Sunshine, Catfish and the Bottlemen, Darlia, Dave Hause, Every Time I Die, Hudson Taylor, Marika Hackman, Mayday Parade, Meridian Dan, P Money, PUP, Slaves, The Districts, The Flatliners, The Front Bottoms, The Orwells, The Skints, The Wonder Years, Touché Amoré and Wovenwar.
For more information visit http://www.readingfestival.com/