Seymour Leisure Centre, Seymour Place, Marylebone, City of Westminster, Greater London, England, UK
Also/previously known as: Seymour Hall, Seymour Place, Marylebone, City of Westminster, Greater London, England, UK, Seymour Hall, Seymour Place, Marylebone, County of London, England, UK
Built 1935-7.
Name change date known as prior to 1989 - guessed.