Quote - Ok question I swapped my ceiling area light for the alex appt IBL with no map. Then have another mesh pre seted to sun for daylight my question is that noise on the grils shirt reflective caustics that will form or fireflies? If the latter how do I get rid of them?

It's the former. Fireflies are white and increase in size and number (in extreme cases your render will look like it is being carpet bombed). I presume, anyway, that you never have diffuse colour, glossiness/specularity too high—you are too much of an old hand to be making those mistakes. You can see that the unresolved reflections on the face relate to the glass. They will resolve, but it may take some time.