The FTSE 100 index slumped 99.42 points, 1.2%, at 8,025.77. The FTSE 250 closed down 295.73 points, 1.4%, at 20,427.80. The AIM All-Share fell 7.07 points, 1.0%, at 730.86.
Donald Trump urged Vladimir Putin not to escalate the war in Ukraine in a phone call two days after the presidential election, according to reports - but the Kremlin says this isn't true.