Allsop Place was named for Thomas Allsop of Allsop Farm.
Allsop Farm arrived on the north side of Marylebone Road soon after its construction in 1757. Thomas Allsop was described as a `cow-keeper’, and a cow-yard is still shown on maps of the 1830s, but by that time his grazing land was covered by Allsop’s Buildings, Mews and Place. Only the Place now remains. The Allsop Arms in Gloucester Place was also situated on part of the farm.
13 Allsop Place was the headquarters of the Metropolitan Railway, built in conjunction with the remodelling of Baker Street Station.
