The leading agency that supports emerging, new and established social enterprises in Leicester/shire is called Case-da. They have a web site: Case-da and their office is in New Walk. The web site does have a listing of social enterprises in our area, although they tell me it is not necessarily up to date.
Case-da began life as Leicester and County Co-operative Development Agency and changed their name in 2005. They will help people in the East Midlands, although a lot of work tends to be focused in Leicester/shire.