purchased by James Farrer. The solicitors Farrer & Co still occupy the building, and in the early 20th century they purchased the other half and reunited the building. Also in the early 1900s, the rear wings were removed in connection with the construction of Kingsway, a major thoroughfare which was driven through the small streets just to the west of Lincoln's Inn Fields. Farrer & Co commissioned alternations by Sir Edwin Lutyens in the 1930s, but the building still retains much of its late 17th and early 18th century fabric and appearance. In the 17th century there was a mansion called Newcastle House in Clerkenwell, which belonged to an earlier Duke of Newcastle. References London's Mansions by David Pearce, (1986) Houses in the City of Westminster Grade II* listed buildings in the London Borough of Camden Prime ministerial homes in the United Kingdom