Did you consider Eucosma Cana? Yours is a lot darker than that shown in Sterling and Parsons but have a look at some of the images on the web.
Thanks Tony. It looks a good match to me. The picture in Sterling & Parsons suggests a smaller moth but I note its length can vary from 7 to 11mm.Carolyn.
Yes, it's Eucosma cana
Many thanks for verification Peter.Carolyn.