The announcement coincides with Responsible Business Week (20-26 April 2015), an annual initiative to increase awareness of the positive contribution of business in society.
The CR Index assesses companies against a range of factors. It provides businesses with a framework to systematically measure, manage and integrate responsible business practice into mainstream business strategy and operations.
Unipart chairman and group chief executive John Neill said: "We are delighted to have achieved this recognition. It provides us with another opportunity to thank and pay tribute to thousands of people throughout Unipart who strive every day to live by the company's principles and philosophy and build its culture."
