Building The Grocer Power List is an exhaustive process. Opinions are quietly sought from industry experts and a wide range of factors are taken into account in order to determine who makes the top 100. From market cap to market momentum, to personal reputation and media attention, and, of course, influence - not just on their own business but on the wider industry as a whole. And, as with every year, everyone featured in the top 100 is based in the UK.

The Grocer's Power List 2016 reflects a sector in upheaval