ING started their agile transformation in 2015 and is now the most advanced bank in this perspective. And successful. McKinsey interviewed the board members responsible for this agile transformation. In 2016 they decided to start the transformation to agile working in their retail branches. By my knowledge the first company who decided to implement agile working into retail.
The assignment was to assess the as-is state of agile working in the retail branches and find the correlation between this and the commercial performance. I was part of a team of The Acceleration Group.