Northwick Park is a London Underground station in Northwick Park in the London Borough of Brent on the Metropolitan line. It lies between Harrow-on-the-Hill and Preston Road and is in Travelcard Zone 4. It is served by 'slow' (all stations) trains only. It takes an average time of 20 minutes from Baker Street. It is close to Northwick Park Hospital, the Harrow campus of the University of Westminster, and the suburb of Kenton.