THOMAS (Those on the Margins of Society) was established by a priest of the Catholic Diocese of Salford, to address drug and alcohol misuse.

THOMAS delivers a range of holistic recovery focused services, which take people from within prison or hospital, through detox and residential rehabilitation into community based provision. Services include drop-in facilities, assertive outreach, recovery programmes incorporating cognitive, social and interpersonal approaches, and support with wider issues associated with addiction.

THOMAS provides residential provision, support for those living in their own homes and community-based programmes. The majority of referrals from the North West of England. For the residential rehabilitation unit in Blackburn, THOMAS is able to accept referrals from across the country.