Blink-182 - Tom DeLonge: While insisting that he did not in fact quit Blink, former bandmates Mark Hoppus and Travis Barker have brutally spoken out about parting ways with the band due to his 'disrespectful and ungrateful' attitude and not being willing to participate in touring and recording. While he's recently released material with Angels & Airwaves, it's been said he'll focus on his 'non-musical endeavours' - including Atticus and Macbeth fashion brands, his Modlife business and film-writing.
Arctic Monkeys - Andy Nicholson: Yup, remember when the portly chap on the left was part of Sheffield's biggest export? After a fresh-faced and pimpled Alex Turner and co sky-rocketed to success off the back of their seminal debut album, bassist Nicholson left the band in 2006. He has since spent his time DJing, playing bass for fellow Sheffield sons Reverend And The Makers and is currently producing and performing in hip-hop group Clubs & Spades with Maticmouth from Reverend Soundsystem.
Kaiser Chiefs - Nick Hodgson: Founding member, drummer and chief songwriter Hodgson left the 'Oh My God' stars in 2012 (after a somewhat acrimonious split where he claimed to write 100 per cent of the band's songs and said the band was 'over'). Apparently they're all just-about friends now, but Hodgson spends his days producing and songwriting from his own studio, Chewdio.
Oasis - Noel Gallagher: He quit Oasis on 28 August in 2009, breaking the hearts of thousands with a Britpop hangover. He went on to reinvent himself as a solo artists with his High Flying Birds, releasing a pretty impressive and acclaimed debut album. He's in the studio now and due to release another later this year.
Pixies - Kim Deal: The Breeders frontwoman and all-round alt-rock icon left Pixies last year, with the band since revealing that she'll be 'impossible' to replace. Since her departure, she has unveiled some pretty decent solo music with much more expected to follow.
Metallica - Jason Newsted: Brought in to replace Cliff Burton following his tragic death in 1986, Newsted quit the band in 2001 for 'personal, professional and physical' reasons. After a decade of side-projects, nowadays you'll find him recording and touring with eponymous new band, Newsted (who have been known to play a 'Tallica song or two).
Interpol - Carlos D: The gothic Mr Dengler was a towering presence in the New York post-punk revivalists until his departure in 2010 when he 'fell out of love with the bass guitar'. He has since been seen working as an actor and video artist - and even made a surprise appearance on the 'Humans Of New York' photo and story series.
Smashing Pumpkins - James Iha/D'Arcy Wretsky and Jimmy Chamberlin: The original and classic line-up of art-grunge icons SP have all been removed and replaced by Billy Corgan over the years. Iha is now a producer, solo artist and member of A Perfect Circle, while Chamberlin formed and left a band called Skysaw and Wretsky has largely been in trouble with the law for drink-driving and 'failing to control her horses'.
New Order - Peter Hook: Hooky was a founding member of Joy Division who went on to become New Order. Despite his iconic basslines being an integral part of the New Order sound, he left the band in 2007 and now spends his days touring the classic catalogues of both bands with The Light.
My Chemical Romance - Matt Pelissier: Former drummer and co-founder of emo giants MCR, Pelisser was asked to leave the band for reasons that are officially unknown after the launch of their breakthrough second album, Three Cheers For Sweet Revenge. These days, he has his own recording studio in New Jersey and has released music with new band Revenir.
Oasis - Bonehead: Once part of a stadium-filling, world-conquering anthem factory, rhythm guitarist Paul 'Boneshead' Arthurs (the bald bloke on the right) left Oasis in 1999 to spend more time with his family. These days, he's a DJ and has a new band called Parlour Flames.
Slipknot - Joey Jordison: Maggots the world over were left devastated by the news that legendary drummer Jordison had parted ways with the band. He insists that he did not 'leave' the band but was pushed, however no further details are known yet. Jordison's next move isn't clear either, but last year he formed new band Scar The Martyr with Jed Simon and Kris Norris - and promised new material and tour dates. Watch this space.