For more information on social impact, design and social investment, listed below are a few useful links that are a great resource to getting a better understanding of measuring social impact.

An organisation who specialise in the design and development of services for disadvantaged people. Through a collaborative and creative approach to design, they help their clients address changes in the marketplace, improve performance and efficiency, win more business and open doors to new markets.
KF Social Impact Consulting works in partnership with Projects with Purpose and assists them with input to social impact design, implementation and measurement.
Northern Social Investment Group (NSIG)