The FTSE 100 fell sharply at the open following a sell-off on Wall Street overnight, sparked by rising global bond yields.
Bitcoin is doing well though, hitting a new high as it topped $111,000 for the first time.
An hour into trade, London's blue-chip index is 51 points down at 8,736. (0.58%)
easyJet PLC (LSE:EZJ) is down this morning after half-year results showed larger losses than this time last year. But the budget airline says current bookings put it on course to hit full-year market forecasts.
BT Group PLC (LSE:BT.A) is also under pressure, despite raising its target for rolling out full-fibre broadband as it posted full-year results that were bang in line with expectations in most measures.
Oil majors Shell and BP are also down as oil prices were knocked lower after the Opec group of oil producers proposed increasing output.
Elsewhere in the mid-cap space, QinetiQ Group PLC (LSE:QQ.) is up 4.3% as the defence technology group said it has "taken decisive action" to restructure the business for growth.
Johnson Matthey PLC (LSE:JMAT) is a big riser on the FTSE 250 as it released full-year results that beat estimates at the earnings per share level, and also announced the disposal of its Catalyst Technologies division to Honeywell International.