On Friday, Duffy told fans via a story on her Instagram account that she would be hosting a balloted gig.
“I’m doing a secret intimate gig in London on the 5th July, next month, and I would love nothing more than for some of you to attend,” she wrote.
“It’s only small capacity so we can only select a few, but really looking forward to it, I will sing some new songs.”
Last month, also shared a black-and-white image from a recording studio on Instagram, writing: “If only I could find the right words to explain how much I’ve missed you all. Working on coming back to you.”
If you have been affected by any of the issues raised in this article, a list of organisations that can provide help and support is available via the BBC Action Line.