Video - Behind the scenes at Amazon’s biggest fulfillment centre as online trader prepares to sell 5.5million items in one day

Amazon warehouse in Dunfermline, Scotland is preparing for the Christmas rush.

Black Friday in 2014 overtook Cyber Monday as Amazon.co.uk’s busiest day for the first time. On that day Amazon.co.uk sold more than 5.5m items at a rate of 64 items per second.