Bench Numbers in the Park

I was hoping that the bench numbers would still exist but I suppose it is expecting too much after forty years. Was it D110 ?. I had a quick look on the internet and the ones in St. James's park don't appear to have numbers. But it could just of easily been in any of the royal parks. I would love to arrange to meet someone in a clandestine way but it has unfortunate connotations nowadays.