Marks and Spencer's sustainability program, Plan A was launched in 2007 which set out 100 sustainability commitments to reach by the year 2012. Doubling up on their efforts, they launched 100 new commitments in 2012 to be reached by 2020 with the ultimate goal of becoming the world's most sustainable retailer.

Through this program the company is working with their suppliers, employees and customers to become carbon neutral, protect the world's oceans, and encourage re-use of their products among other goals.

To learn more about Marks and Spencer's Plan A click here.