I have you some 70 miles from the centre of the universe (London) so that doesn't help you much.
That said, I know of 3 others (members here) that if they too travelled up to your maximum of 50 miles, could all find a common location for a meet up together. Will never happen. (Although I have met two of them.)
As you well know, I am happy to meet up with anyone. Sadly, even people I have met in the past (sometimes regularly) have other demands that push their interest of a meet into a very low place on their list of priorities.
Even when I have known for sure the people buying womens shoes off me are men, and they are buying for themselves, they are reluctant to get into a dialogue over their interest. I was going to write; "I've no idea why", but then thought: wives. If your wife/girlfriend does not know or doesn't approve of your secret, social activity isn't going to happen. We are our own jailer. (My last philosophical remark today. )