North Kensington is considered the major neighbourhood of Notting Hill, but Kensal Green, Notting Dale, Portobello and Westbourne Park are also part of Notting Hill; though estate agents differentiate North Kensington and Notting Hill as distinct areas with Westbourne considered part of Notting Hill and Kensal considered part of North Kensington. Locally the areas of Portobello, North Kensington, Kensal and Westbourne are referred to as Ladbroke Grove, the main thoroughfare and tube station at the heart of Notting Hill. That part of the Royal Borough of Kensington and Chelsea roughly encompassed by the electoral wards of Saint Charles, Golborne, Notting Barns, Colville, Norland, and Pembridge, which is bounded on the north by Harrow Road and on the south by Notting Hill Gate and Holland Park Avenue, includes all areas known as Notting Hill, including Notting Barns, the centre of the Notting Hill race riot. David Cameron, former leader of the Conservative Party, is known as part of the "Notting Hill Set", though he states he lives in North Kensington.