I work in two different locations, they are;

Harley Street Therapy Centre, 12 Harley Street, London, W1G 9PG (a short walk from Oxford Street tube station - click here for map)

West Hill House, 6 Swains Lane, Highgate, N6 6QS
(by the junction of Highgate Road and Highgate West Hill - bus routes 214 and C11 - click here for map)