My bad - I started talking about Prunus padus in the One for the cherry scouts - Pendula, white blossoms thread that began with a Prunus pendula. I've moved all that conversation to this new thread. I see that [Glasnevin Botanic Gardens in Ireland] have Prunus padus 'Watereri' (link goes to map -C6, location 7), a cultivar that has been awarded a Royal Horticultural Society Award of Garden Merit. I saw such a nice Prunus padus in Bath that when I read about 'Watereri', I wondered if the Bath one might have been that. I'd love to see a photo of that... .