In initial deals, London's benchmark FTSE 100 index of major blue-chip companies fell 0.4 percent to 5,765.94 points compared with Tuesday's closing level.
In the eurozone, Frankfurt's DAX also dipped 0.4 percent to 10,659.00 points and the Paris CAC 40 erased 0.2 percent to stand at 4,517.06.
Milan's FTSE Mib slid 0.5 percent to 17,479.56 and Madrid's IBEX 35 dropped 0.5 percent to 7,070.50 points.