Big Four firm PwC came top of the ranking, followed by KPMG ranked second, Deloitte sixth, and mid-tier firms Mazars and Grant Thornton also feature.
The index is the creation of the Social Mobility Foundation and ranks the UK’s employers on the actions they are taking to ensure they are open to accessing and progressing talent from all backgrounds.
This year 125 employers from 18 sectors were considered for the top 75 rankings.
PwC was placed first overall, scoring highly for its work to increase the variety of routes for people of all backgrounds into the firm, engaging with a wide range of schools and universities across the country and, specifically, for providing both employment and schools outreach in Bradford – a government identified social mobility opportunity area.
Kevin Ellis, chairman and senior partner at PwC UK, said: ‘As a large employer, we have an opportunity to drive positive change for our people and the communities we work with across the country.
‘Good progress has been made but there is still much more to be done. Many businesses are doing fantastic work on social mobility, and we will continue to collaborate with others to have the biggest impact and ensure that someone’s future is determined by their talent and determination, not by their background.’