The nearest match we can find is "The Abruzzo and Molise Heritage Society of the Washington, D.C. Area" but it's unlikely that they installed the Tosti plaque in London.
This section lists the memorials created by the subject on this page:
Assoc. Abruzzo-Molise, G.B.
Creations i
Sir F. Paolo Tosti
City of Westminster Sir F. Paolo Tosti, K.C.V.O., musician, 1846 - 1916, liv...
Other Subjects
The International Churchill Society
A society set up to provide a forum to bring together all those with an interest in commemorating the life and advancing the legacy of British statesman Sir Winston Churchill.
1 memorial
Vauxhall Society
A civic consultative group covering the parliamentary constituency of Vauxhall in London, which extends from the north of Waterloo to Brixton, Clapham, Stockwell and Vauxhall, as well as the neighb...
1 memorial
Greenwich Society
The Greenwich Society aims to make Greenwich a better place for all who live and work here, to promote the town's heritage, to improve its amenities and to make it attractive to visitors.
4 memorials
Fawcett Association
Trade union of postal sorting clerks. Founded by Wallace Cheesman and named after Henry Fawcett. The Women Sorters' Association and the Postal Bagmen's Association affiliated in 1908. In 1919 it...
1 memorial
George Bunting
From Orra: “George, an engineer by profession, was an easy-going, pipe smoking and puckish ‘mein host’. His auburn close-cropped hair and goatee made him instantly recognizable, and his infectious...
1 memorial