Thank you all so much for your feedback on what feels like 100 posts on finding the right frames.
The Optometrist I found has been wonderful and they got new frames sent in for me, which sadly again were not the best fit. They have sourced some more from a brand that I found fitted well so hoping to check those out in the coming days.
In the meantime I have tried on so many now that I think I have a good picture of what I think I am looking for. So, I have spent hours on line and these may be my new frames.
They are 49mm (lense width) and 16mm across the bridge. They are the cat eye shape and they don't lower and flatten at the temple, but rather remain raised and rounded. They are also not too round at the bottom. These are all the elements that I think make for a most flattering shape for me.
I can't get them in a B&M store to try but the online retailer has an excellent return policy. Sorry cannot show them on but they are the same size as the ones that the majority of you liked in a previous post.