Efficiency of grocery retailer supply chains in the UK in 2016

Which of the following retailers would you say operates the most efficient supply chains?

The data displays the results of a survey in which food and drink manufacturing professionals were asked to rank grocery retailers on the efficiency of their supply chains in the UK in 2016. Amazon is agreed to have the most efficient supply chain with a ranking of 7.2, followed by Aldi at 6.8.

Amazon 7.2
Aldi 6.8
Tesco 6.4
Lidl 6
Asda 5.9
Sainsbury's 5.4
Morrisons 5.3
Iceland 5.2
Waitrose 4.8
Ocado 4.7