Samuel Selvon
https://www.bl.uk/people/samuel-selvon
The following page from the British Library provides a helpful overview of Selvon's life and work.
The Question and Answer section for The Lonely Londoners is a great resource to ask questions, find answers, and discuss the novel.
In his poem, The Lonely Londoners, Selvon examines the effects of immigration on individuals.... their vulnerability and emotional angst, Moses, for example, has lived in England for an extended period of time, and yet, his memories of Trinidad...
London represents the people in it. London offers its residents an endless maze of adventures. With a district for every class and type of person, there are entire communities which never meet one another within London city limits. For Galahad and...
I would assume it's because the characters are living in London and are socially and politically isolated!