note the periods:
http://www.chronicleworld.org/tomsite/capsule.htm
1555 onwards:
RISE
""Certain black slaves" arrive from Africa with John Lok; and marks beginning of continuous Black presence in London.
Late 16th century, opening up of West African trade. Africans became part of London's population in seafaring centres like Deptford."
1596-1601:
FALL
"Fear of increased black population in London and other towns leads to Royal proclamation by Queen Elizabeth I to arrest and expel all "Negroes and blackamores" from her kingdom."
1700s
RISE
"First era of large scale settlement of blacks in Britain.
Significant presence of Black people brought as slave-servants of returning ex-colonial officials, traders, plantation owners, andmilitary personnel.
Growing evidence of Black presence in the northern, eastern and southern areas of London.
In addition, there were small number of free slaves and seamen from West Africa and South Asia.
Black Londoners number 10,000-15,000 of the nation's 20,000 black people. London by now home to communities of Blacks, and of Jews, Irish, Germans, and Huguenots."
early 1800s
FALL
"Parliament abolishes slavery throughout the British Empire.
Steady decline in numbers and visibility of London's black population as fewer blacks were brought by West Indian planters and restrictions on immigrants from Africa."