Plans were to design and build a new college, but this would take time which the governors did not want to waste. In the traditional manner of Bloomsbury's philanthropic institutions, they made a start in a small way in some of the roomy old houses on the site. London House first opened its doors in October 1931, in Nos. 4–7 Caroline Place (now Mecklenburgh Place) on the west side of the site. The house was soon full, with a long waiting list, and by the start of World War II occupied all the Caroline Place houses.