Fashion plate of 1909 shows upper class Londoners walking in front of Harrods Department Store (from Wikipedia)
I just added a scene wherein Annie and Portia are shopping at Christmas-time, 1931, and I needed to make sure Harrods of London actually existed back then. It did indeed, on Brompton Rd. in the Knightsbridge area near Hyde Park. Phew! Love it when history supports my scribblings in the Moleskine!