The idea of missions and settlements caught fire. Cambridge colleges headed south of the river. As the following map, drawn in the first part of the 20th Century shows, Pembroke House was just one of a dozen missions, mostly congregated in Southwark.

https://www.queens.cam.ac.uk/visiting-the-college/history/college-facts/queens-house-mission

Charles Booth’s poverty map shows four missions in the Walworth area, Charterhouse to the North, Girls School to the South and Wellington almost adjacent to Pembroke House.