Could it be the Saint Giles Christian Mission (SGCM)?
"In 1877, what was known as Prison Gate work was started. The Mission set up huts outside Holloway, Pentonville and Wandsworth Prisons where newly discharged prisoners were offered breakfast and assistance often in the form of travel money to get home, clothing, and assistance with employment, as well as encouragement to take the temperance pledge.
Work among first time offenders continued with the opening of a series of hostels and homes between 1880's and 1900. These catered for young offenders who were encouraged and supported to find work or enter the armed services".