Thanks to all for the contributions, even if I'm not a great deal wiser :-)
I hadn't seen "Gallant tars" before, however - I quite like that.

And before I posted I did a search including "oak" with both "heart" and "hearts" and none of those earlier threads came up. Perhaps the search engine only searches a random portion of the database?

And Breezy, having been born and raised in Kiddie, I do know the Alcester Road out of Bromsgrove. Now being on the other side of the pond, however, I'll have to miss the festivities. I won't be there till October.