For administrative purposes they use boroughs, but in daily life people refer to neighborhoods
London boroughs
London Neighborhoods
32 official borough and 1 City of London
London boroughs
The London boroughs are the current 32 local authority districts that together with the City of London make up the administrative area of Greater London, England; each is governed by a London borough council. The present London boroughs were all created at the same time as Greater London on 1 April 1965 by the London Government Act 1963 and are a type of local government district. Twelve were designated as Inner London boroughs and twenty as Outer London boroughs. The City of London, the historic centre, is a separate ceremonial county and sui generis local government district that functions quite differently from a London borough. However, the two counties together comprise the administrative area of Greater London as well as the London Region, all of which is also governed by the Greater London Authority, under the Mayor of London.
https://en.wikipedia.org/wiki/London_boroughs
Unofficial Neighborhoods
List of areas of London
London is the capital of and largest city in England and the United Kingdom. It is divided into the City of London and 32 London boroughs, the result of amalgamation of earlier units of administration that can be traced back to ancient parishes. Each borough is made up of many smaller areas that are variously called districts, neighbourhoods, suburbs, towns or villages.
https://en.wikipedia.org/wiki/List_of_areas_of_London

Seonglae Cho