They were first nominated for the underground accolade in 2009.

And Florence and the Machine will be hoping luck is on their side this time round as they lead the nominees for the Mercury Prize 2015.

Florence Welch and her six-piece indie rock band's third studio album, entitled How Big, How Blue, How Beautiful, is among the 12 shortlisted for the prestigious award which will be announced next month.

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Second time lucky: Florence and the Machine will be hoping luck is on their side this time round as they lead the nominees for the Mercury Prize 2015

The full shortlist of 12 nominated albums was unveiled on BBC Radio 6 Music on Friday and sees widely-celebrated artists Jamie xx and two-piece punk band Slaves receive nods for their In Colour and Are You Satisfied? releases, respectively.

Lead Supergrass vocalist Gaz Coombes also fancies his chances with his second solo album which is titled Matador.

Other releases shortlisted include Syro by Aphex Twin, Hairless Toys by Roisin Murphy, Shedding Skin by Ghostpoet and Architect by C Duncan.

Say My Name: Florence Welch and her six-piece indie rock band's third studio album, entitled How Big, How Blue, How Beautiful, is among the 12 shortlisted for the prestigious award which will be announced next month

Wolf Alice, Benjamin Clementine, ESKA and SOAK complete the line-up.

The prize aims to celebrate the best British albums from the past year, with LPs released between September 9 2014 and September 25 2015 eligible.

MERCURY PRIZE 2015 SHORTLIST Aphex Twin - Syro Benjamin Clementine - At Least For Now C Duncan - Architect Eska - Eska Florence + The Machine - How Big, How Blue, How Beautiful Gaz Coombes - Matador Ghostpoet - Shedding Skin Jamie xx - In Colour Róisín Murphy - Hairless Toys Slaves - Are You Satisfied? SOAK - Before We Forgot How To Dream Wolf Alice - My Love Is Cool Advertisement

Florence, 29, has yet to acknowledge the achievement but her band's Twitter account has retweeted a link to the list.

Jamie, 26, who won the prize with his band The xx back in 2010 for their debut album xx said he was thrilled tobe in with a chance of becoming a double award-winner.

He said: 'It was such a big thing for all of us in The xx before we even got nominated, it was such a great way to discover new music and then when we were nominated the first time it felt very surreal. So yeah, it's wonderful to be nominated again.'

Previous nominees Anna Calvi, Nick Mulvey and Corinne Bailey Rae have been involved in the 12-strong judging panel along with a selection of journalists, DJs, broadcasters and festival organisers.

Last year saw Young Fathers' debut album Dead! win the accolade while James Blake, Pulp, Arctic Monkeys and Dizzee Rascal are among other artists to have won in the award's 23-year history.

The winner of the coveted prize will be announced at a ceremony held at Broadcasting House's Radio Theatre in London on November 20.