Sir Edwin Landseer Lutyens (1869-1944) was a British architect who designed many English country houses, He worked in both the Arts and Crafts style and in the classical style, sometimes in collaboration with Gertrude Jekyll, the horticulturalist and garden designer. Gertrude Jekyll's own house, Munstead Wood in Surrey, was designed by Lutyens (see picture below).
Lutyens was also responsible for the design of buildings in New Delhi in India, including Rashtrapati Bhavan (formerly the Viceroy's house; now the home of the Indian President).
Lutyens interior designs may be viewed at various locations in London including the Bloomsbury Hotel on Great Russell Street, and the Writing Room of the Berkeley Hotel in Knightsbridge. The picture below shows the hallway of the residence of the British Ambassador to Washington, which was built in 1930 to a Lutyens design.