Paddington Station (Romance of a Shop)

Paddington is a Central London railway train station located. It also has the world's first underground station. 

In Romance of a Shop, the girls go to Paddington several times. 

"Yes, do, and take care of yourself, dear old Gerty," said Lucy, as the cab drew up at Paddington station." (chapter 18)

"No one is likely to come in this Egyptian darkness," she said; "it is four o'clock already, and I am going to take you to Paddington." (chapter 18)

Upper Baker Street (Romance of a Shop)

Baker Street was a residential area for primarily upper middle class people, and was known for having many businesses, including a wax museum. In Romance of a Shop, the girls' studio and residence were located on Upper Baker Street in unit 20B. 

Quote from Romance of a Shop: 

“By the end of June the premises in Upper Baker Street were quite ready for occupation” (Chapter IV)