This is a building at the junction of Grosvenor Gardens and Buckingham Palace Road in Victoria. I walk past it every day and think, this could be in Paris. 7th arrondissement? I checked on the web, and found that it’s just on the edge of a Westminster conservation area and the architecture being preserved is described as “French Renaissance”. The area was constructed by Thomas Cundy III in the 1860s.
Balls Brothers is a decent wine bar, so it fits the Parisian bill!