The band's sound is reminiscent of and rooted in modern blues rock, hard rock, garage rock, stoner rock and psychedelic rock. Their first album Royal Blood was released in August 2014.
Royal Blood consists of lead vocalist and bass guitarist Mike Kerr and drummer Ben Thatcher. The pair are from West Sussex: Kerr grew up in Worthing, while Thatcher is from Rustington. They first met around 2005 when they were teenagers, and for a brief period, they were part of the same four-piece band called Flavour Country in which Kerr played keyboards and the keytar.
Royal Blood formed at the beginning of 2013 after Kerr's return to England from a sabbatical in Australia. Kerr had previously used the name Royal Blood whilst in Australia, working with a drummer called Matt Swan. When Kerr returned to England, Thatcher picked him up from the airport and the two decided to form a band. Initially, Royal Blood "couldn't get a gig in Worthing for months", and according to Kerr "we ended up just playing a lot of open-mic nights with acoustic singer-songwriters." The band developed their music in the studios of Brighton Electric, and it was during these months that they were signed by Warner/Chappell Music.
The band joined the same management company as the band Arctic Monkeys. During the summer of 2013, Arctic Monkeys drummer Matt Helders was seen wearing a shirt supporting Royal Blood (before the release of their first single) during Arctic Monkeys Glastonbury Festival concert in July 2013.