| ACT | COUNTRYCNT | EDITIONED | FESTIVALFES |
|---|---|---|---|
| Mahalia | GBUnited Kingdom 2019 | | |
| Mahalia | GBUnited Kingdom 2017 | | |
| Matt Maltese | GBUnited Kingdom 2017 | | |
| Mura Masa | GBUnited Kingdom 2016 | | |
| Marmozets | GBUnited Kingdom 2015 | | |
| M O N E Y | GBUnited Kingdom 2014 | | |
| Molotov Jukebox | GBUnited Kingdom 2013 | | |
| Monki | GBUnited Kingdom 2013 | | |
| Marcus Foster | GBUnited Kingdom 2012 | | |
| Matthew and the Atlas | GBUnited Kingdom 2012 | | |
| Mamas Gun | GBUnited Kingdom 2011 | | |
| Monarchy | GBUnited Kingdom 2011 | | |
| Mount Kimbie | GBUnited Kingdom 2011 | | |
| Marina & The Diamonds | GBUnited Kingdom 2010 | | |
| Micachu & the Shapes | GBUnited Kingdom 2009 | | |
| Mongrel | GBUnited Kingdom 2009 | | |
| Mumm-Ra | GBUnited Kingdom 2007 | | |
| Mohair | GBUnited Kingdom 2006 | | |
| Mystery Jets | GBUnited Kingdom 2006 | | |
| M.A.S.S. | GBUnited Kingdom 2004 | | |
| Manitoba | GBUnited Kingdom 2003 | | |
| MC Sonistar | GBUnited Kingdom 2003 | | |
| Miss Black America | GBUnited Kingdom 2003 | | |
| Mouse | GBUnited Kingdom 2003 | |