I hope this is the next song that Coco Sumner releases after Self Machine (out on 12 July). It's called Quicker and I think I like even more. There are only three videos that I can find on Youtube and they are quite poor quality. One is below, here is a link to MTV Live sessions which is really good but I can't embed it. I'd recommend over the video below.
Her album, The Constant is released some time in August I think.