Jess Glynne going for it, singing 'Not Letting Go' This image appears in the gallery:#CapitalJBB: MUST-SEE Saturday Pictures Including Coldplay, Jason Derulo & More! 55. Jess Glynne going for it, singing 'Not Letting Go' Picture: Gobinder Jhitta 131 images See the full gallery: #CapitalJBB: MUST-SEE Saturday Pictures Including Coldplay, Jason Derulo & More!