Just found this. From a report on the National Rose Show. "Nine distinct varieties of new decorative roses; 1st - Mrs. Charles Turner, Slough, with Mrs. Edouard Herriot, Mme. Charles Lutard, Pearl, a pretty single bunch variety, Queen of the Musks, and Old Gold."
The later. SBR is quoting from a wonderful online resource should anyone have the time to explore. The Gardeners’ Chronicle is reporting on the NRS show staged in a special tent in Regent’s Park, London on a ‘glorious day typical Rose weather’, 22nd June 1915. Queen Alexandra was an earlier visitor with Miss Willmott acting as a guide. The show was thronged with visitors waiting their turn to enter forming a long queue. The report over several pages includes image of the rose, Lady Bowater (same as on HMF).