Extensive five CD box set exploring the history of thrash metal in the UK - curated by author and scene chronicler Ian Glasper. From legends such as Venom, Onslaught, Sabbat and Acid Reign to lesser-known, cult artists. 83 tracks across five discs, including rare demo and live recordings and a booklet featuring previously unseen photographs. Includes 10 previously unreleased tracks. Released to coincide with the publication of Ian Glasper's book of the same name. For decades, UK thrash metal has been the most underrated and overlooked member of the metal family. Criminally ignored, and considered secondary to it's American, German and Brazilian equivalents, the genre has nevertheless continued to survive and thrive, rising from the ashes on more than one occasion. The scene has generated a wealth of amazing music, often in the face of adversity and apathy, and Contract In Blood documents the whole scene - warts 'n' all. From humble demo recordings to major label artists, spanning over thirty years of relentless and uncompromising music. This is the definitive collection of UK thrash.