Injuries, arrests as America's 'Black Friday' shopping tradition spreads to UK

Customers fighting over discounted large television sets in the Black Friday sales at Asda's Wembley Superstore, London, Britain on 28 Nov 2014. 

Police and medics have issued pleas for calm after the U.S. tradition of "Black Friday" bargain-hunting hit the UK, with angry scuffles breaking out in superstores up and down the country. 

Just an average midnight in Thetford