Here are some photos I took yesterday at 3.30pm after going to Washbourn Gardens to look for the Monarchs. They were to the right of the gates in one of these photos.
I have posted these in case anyone in Richmond wants to get an idea of where they may find them. Kath has checked up on them regularly, and has seen a few with tags. I did notice a Yellow Admiral divebombing a monarch who was trying to land amongst the cluster!