I was at Marloes Mere early yesterday morning and thought I had a glimpse, from the Britton hide, of a distant Garganey, which was with a group of Mallards. It disappeared from view soon after I managed to get my scope on it, and I had to leave soon afterwards.
I hope to be up there some time tomorrow, or Thursday, when I will look again. Hopefully, if it's still there, I will be able to confirm it, and take some photos.