Smokescreen Productions work with national charities to bring contemporary issues to life and produce educational impact theatre. Not only do they produce material for schools but also assess the impact of their work.
A list of some great UK theatre companies doing innovative and inspirational work in the area of Social Impact Theatre - Theatre Companies. There are some great examples and case studies on their websites.
And here are some academic research papers on Social Impact Theatre and its role in society.
The BBC have created some editorial guidelines that may be of interest and value to theatre makers preparing for any social impact theatre production. The most relevant sections are:
Documentary film makers have been effective at achieving social change and theatre companies can learn from their examples.