Well The Craft Barn have foiled me again with their twist on the letter. I was unable to do Mother's Day for "M" now unable to do Father's Day for "F" as the twist sets the letter as "Fe to Fr"!
Onward and upward, I found a Cornish May Custom called the Floral Dance or Furry Dance (couldn't use the latter due to twist!)
I distinctly remember Terry Wogan on Top of the Pops with this too, and now I know what he was singing about.
Lily of the valley buttonholes are worn for this event, upwards for the men and downwards for the ladies, which explains my page.