Spot gold touched $3,500 an ounce in the past hour, while the dollar - traditionally also a safe haven in times of trouble - was trading just above $1.34 to the pound early on Tuesday.

Here's a breakdown of the row... What did the Octopus ads say? The Octopus ads across social media, radio and billboards claimed: "Most homes would save with Octopus." And an email on 7 October ...