Wolf Alice: Definitely amongst the three most successful acts in the longlist - and, we suspect, poised on the brink of even bigger things. Having earned a Mercury nod for their debut album, My Love Is Cool, and earned a passionate, borderline obsessive fan base to boot, Wolf Alice are blowing up, still. They sold out Brixton Academy, and daresay they'll be headlining festivals in no time.

Kwabs: It's been a good, if not quite phenomenal, year for the R&B pop singer. He released his debut album, Love War, a few months back, when it reached No.26 in the UK. He's not had much success on the singles front either, with only one of his five releases charting - but it's not all about chart success, and he has still amassed a fairly impressive following on social media and critical acclaim. We're sure his best is yet to come.

Lapsley: She's still skirting the edges of mainstream success (which is hardly surprising given how lusciously subtle her low tempo electronic is) but we have no doubt, under the wise guidance of her label XL, that Lapsley's debut album is set to make the world take better notice.

Novelist: The youngest of a very young longlist, the South London grime MC has been dubbed "the new face of grime," and by DJ Logan Sama as "the poster child for the first generation of real grim kids." He's living up to the hype, and supported Major Lazer at Alexandra Palace last month.

Rae Morris: Her debut album, Unguarded, made it into the top 10 in the UK right at the start of the year, though none of its singles charted quite as highly as they deserved to. Since then, she's been touring pretty extensively, and gained even more of a name for herself on this summer's festival circuit.

Shamir: The infectious, off-kilter pop made by self-professed "queer black kid" Shamir, his vocals androgynous and futuristic, is reflective of how the mainstream is moving, unapologetically, left-field. Shamir's debut album, Ratchet, didn't make a huge dent in the charts, but he's hugely popular amongst fellow musicians, and music fans are on the way to catching on too.

Shura: Another one on this list who decided to bide her time, rather than rush-releasing a debut album off the back of the hype. Her EP White Light gave a good taste of what's to come, and its full-length follow-up, when it materialises, will no doubt be equally great.

Slaves: When they're not busy fending off criticisms of their ill-advised band name, Slaves are riding a pretty impressive wave of success. Their music is punk and lo-fi and not instantly palatable, and yet they've managed to secure both a No.9 chart position and a Mercury nomination with their debut album, Are You Satisfied?

SOAK: Yet another of the BBC's 2015 roster who managed to secure a Mercury nomination, with her debut album, Before We Forgot How To Dream (such a melancholic, nostalgic title for such a young musician). The album just scraped its way into the top 40, but her recent Mercury nod will surely bump the sales even more - and deservedly so.

Sunset Sons: They've hardly been unsuccessful, but on a list that's markedly diverse in terms of gender, race and genre, an all-male rock band looked and sounded - for once - a little out of place. Sunset Sons have earned themselves a modest following, but they've not exactly blown up.

Raury: Word of Raury's talent hasn't quite spread as far as it might have done, given that he made it to No.4 on this list. The 19-year-old genre-blending musician released his debut album, All We Need, last month - but it didn't chart in the UK, and only made it to No.78 in the US.

James Bay: From the moment he stepped in last minute to replace an unwell Lana Del Rey for Radio 1's Live Lounge, Bay has proven himself a safe pair of hands. He was doubly tipped for success this year, having won the Critics' Choice award at the Brits too, and he's followed the hype with a No.1 album. The size of the venues he's selling out is staggering - arenas surely beckon him.

George The Poet: His single 'Cat D' received a fair amount of airplay on Radio One - which was a bit of a shame, because it wasn't reflective of his far superior Chicken And The Egg EP, and the single didn't quite connect with the public. His debut album is yet to materialise, so fingers crossed he's biding his time and preparing a second wind.

Stormzy: Perhaps still not a name that many people would know if you stopped them on the street, but the 22 year old has helmed arguably the biggest year for grime music to date. It's an underground music scene for a reason though, and Stormzy isn't showing any signs of pulling a Dizzee Rascal and opting for a long-term foray into pop.

Years & Years: Well, they're playing Wembley Arena next year, so that says it all really. It's hard to believe Olly Alexander et al were relative unknowns just over a year ago, given the whirlwind success of their debut album, Communion. The only band on the list whose fans are more fervent than Wolf Alice's, Years & Years have proved their position at the top of this list was justified.