Abstract: This paper identifies the changing locational patterns of the Jewish community in Britain during the past century. Two major trends are identified. At the national level there has been movement out of many small provincial communities to the large urban centres, particularly Greater London and Manchester. Within the city, there has been movement out of the traditional inner city ghettos to the suburbs, thus reflecting the upward socio-economic mobility and integration of what was an immigrant group. Both these trends closely mirror the general patterns of population movement in Britain during the twentieth century. Whereas there is no way to trace the totally assimilated population, those sub-groups maintaining an affiliation with the wider community have moved in specific directions within the city, resulting in new suburban concentrations of residential segregation. The study points to the paucity of reliable data for a population about which no census data exists. A methodology is suggested for identifying the changing locational patterns, and intensity, of Jewish community life. This involves an analysis of community institutions and services, their relationship to space, and their changing locations and size over time. A number of these are identified, and the analysis is carried out for the case of Greater London.