In walking back from the Nationaal Portrait Gallery to Piccadilly this morning, I noticed the detailing on a building on Lisle Street, visible as one looks north up Leicester Street from Leicester Square (next to the ill-starred St. John Hotel).   It’s 5, Lisle Street, which turns out to have been the site of the Pic-nic Club.   The current northern Renaissance building was designed by Frank Verity, a theatre architect, and was originally occupied by the French Club, then Pathé News, and since 1935 by St. John’s Hospital for Diseases of the Skin:-