The largest residential care activities for mental retardation, mental health and substance abuse companies in London

Ranked by shareholders' funds, from 27 active companies in the NW postcode area.

"Largest" here means shareholders' funds — what the most recent balance sheet says the company is worth. It is the only measure of size filed by enough companies to rank on.

Companies that have never filed accounts cannot appear, however big they are. Figures are as filed at Companies House and can be a year or more old.

Residential care activities for mental retardation, mental health and substance abuse in London top 20