15 July 2015 (Updated: 11:00 GMT)

Amazon Prime Day: online heavyweights come out swinging

The invitations have been sent, the streamers are hung and all eyes are on the host as Amazon celebrates its 20th anniversary. Always one for a touch of fanfare, the retailer has launched its very own promotional ‘Amazon Prime Day’ in its honour, which promises Prime members “more deals than Black Friday”...