Ok, I am back home having tried on several bras, the size that seemed to fit best in the shop was 32F. I bought 2 and put one straight on in the shopping centre loos...
Now I'm home though, I don't think it's as good a fit as I first thought. I chose this bra...
www.debenhams.ie/webapp/wcs/stores/servlet/prod_10052_10001_150010532886_-1
and I can see now that I'm home that the top (lacy part) of the cup is wrinkling (I have sort of tear dropped shaped breasts...fuller at the bottom than the top and one side a bit smaller) and I have discovered that the bra was sliding down my torso a little on the loosest setting. I have fastened it on the tightest hook (I shouldn't have been in such a rush to take the tags off!) and it feels a lot better. The cup on the left (bigger side) is full when I bend over and scoop, but when I stand up it wrinkles a bit.
On the plus side, there is absolutely NO back fat now, although there is a tiny bit under my armpit, and my boobs are such a lovely shape that I can't stop looking at them.
I did try on a couple of 30s...a 30FF & 30GG and the sides seemed to go very far up and they just felt wrong, that's why I plumped for the 32.
I wonder if a half cup style or balconette might suit better?
I would be so grateful for any thoughts you might have.