I have had quite a few on the dry these last few days, but frustratingly, I seem to lose a lot more than I land, and anything that was big enough to put a healthy bend in the rod, broke the leader!! Getting very annoyed about it. In 35 years of angling I have never had so much hassle from broken line!!! I use a lot of very light line for my roach fishing, down to 12oz breaking strain and size 24 hooks, so I think I am ok on knots, but everything I have tried recently has led to broken leaders, normally the hook knot. Not a happy bunny!!
Currently I am using (for the tippet) 3lb Drennen Sub Surface, 3.3lb Orvis Mirage, Wychwood 3 or 4lb Fine and dry.
As for the succesful flies, mainly olive F-flies in size 16-14 or olive paraduns in the same size.