"Bad Blood" is the second single from British rock group Supergrass' sixth album, Diamond Hoo Ha. It was released on 17 March 2008, which was one week before the album's release date. The song is about a rough night out in Reykjavík, Iceland, as Gaz Coombes explains;

"We'd played the Airwaves festival, and it was about four in the morning, and right outside our bedroom window in Reykjavík there were loads of boozy scuffles. A really beautiful town, peaceful during the day – then it just went mental at night with drunken fights and shouting. I just thought the contrast was amazing. We carried on writing the lyrics later, using experiences we'd had, wandering around New York City at two in the morning, the worse for wear, and being excited by the dangers, but also being a bit naive. The big line in there is, "I don't believe that man needs God, thank God". Then it goes on: "I can't forget you, you're all I've got my love". It's saying man doesn't need God, he just needs a good woman." This song is featured in Need for Speed: Undercover as one of the tracks used in the series.

Gaz Coombes is also quoted as saying that "Bad Blood" is about violence and paranoia in the 21st century.

The song performed badly in the charts due to lack of airplay; upon its first week of release it only managed to reach #73. The next week, it dropped out of the top #100 completely.

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The accompanying video to Bad Blood won the Best Rock Video award at the 2008 UK Music Video Awards.

The video features the band playing in a stereotypical English pub with the camera fixed on certain objects as they move, creating a swaying sort of effect. The opening scene is that of a reel of recording tape spinning which then pans out to the band themselves. The camera alternates between scenes of a pendulum clock, a mechanical wind-up metronome, a Newton's cradle, a swinging framed picture of Danny Goffey and a framed picture of Gaz Coombes which falls to the floor and smashes. The chandelier above them is also swinging throughout.

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Wikipedia