Up to 1918 the constituency included Paddington railway station and the Paddington canal basin, together with St Mary's Hospital. The south-east of the constituency included some Edgware Road frontage which included The Metropolitan Theatre music hall, a famous entertainment centre which was open for almost all of the time that the constituency was in existence. Between the Harrow Road and the canals of Little Venice was a densely packed area developed in the 1840s around the older St. Mary's Church and its churchyard. This area included Paddington Green and some homes and was the origin of the settlement of Paddington.