The UK transport system may have been grinding to a halt this week as heavy snowfall blanketed the country, but London's trading markets held up...fairly well. London-based traders and investors may have been less busy this week, but they didn't completely shut up shop.

The value of FTSE100 shares traded on European venues including the London Stock Exchange, Chi-X Europe and Deutsche Borse fell by one-third over the last four days compared with the same period last week. According to Bats Europe, the value of London's leading shares traded on European markets was €3.5bn between Monday and Thursday, compared with €5.3bn during the same period last week. This compares with the value of FTSE100 traded during the third week of November of €5.6bn.