1987 is my best guess too, and from the way the garden looks, it might well be spring.
It's quite amazing how many before unseen photos of Freddie have appeared on the internet in the last two or three years.
Agreed ! 1987 would be my choice in this case. ...With a little luck, and all the countless numbers of Freddie related books out there, sometimes there is a deeper story behind a picture.
But maybe it was just a day in the Garden ( btw.Garden Lodge )?