Muswell Hill Muswell Hill Broadway Muswell Hill Muswell Hill shown within Greater London OS grid reference TQ287897 London borough Haringey Barnet Ceremonial county Greater London Region London Country England Sovereign state United Kingdom Post town LONDON Postcode district N10 Dialling code 020 Police Metropolitan Fire London Ambulance London EU Parliament London UK Parliament Hornsey and Wood Green London Assembly Enfield and Haringey Barnet and Camden