Grey Britain is the second album by English hardcore punk band Gallows, released 2 May 2009 through Warner Bros. Records.

[citation needed] In an interview with Kerrang!, it was revealed that Gallows' sophomore effort would feature guest appearances by Biffy Clyro's Simon Neil, and various members of Rolo Tomassi and Cancer Bats.

[citation needed] In a January 2009 interview with Rock Sound, Carter announced that Grey Britain would be "49 minutes of aggressive music" and that signing a contract with a major label had not influenced the band to record a "poppy" or more "commercial" album.

Drowned in Sound commented: "the music rockets from intentionally rudimentary knuckle-whiteners to ambitious-of-design affairs that reconfigure one’s opinions on a band previously seen as a straight-up hardcore act".

[25] Ben Myers of Mojo commented "Not since the Pistols and The Specials has a pissed off provincial band so clearly meant it" and ClashMusic called the record "as daunting as blow-drying your face in the evil ghost-gas that Indiana Jones unleashes from The Lost Ark".

[31] The album has been categorised as hardcore punk[32] and metalcore,[16] showing significantly more metal influence than the band's prior material.

In an article for Vice, writer Tom Connick described it as "post-apocalyptic" and as "a record so nihilistic, unpalatable and inescapably bleak it made Orchestra Of Wolves look like nothing more than a temper tantrum".

[33] The album's final track makes direct attacks against the Metropolitan Police Service, Catholicism, the National Front, rapists, child abusers and racists.

[35] In 2019, Vice praised it for its accurate prediction of "fractured Brexit Britain" and lead vocalist Frank Carter stated "We were writing about a post-apocalyptic future in London.