Glencore ended the day 4.8 percent higher, continuing its rally that began when the London-listed miner announced a $10 billion packet of debt-reduction measures on Monday. The rest of the basic resources sector was given a boost, with Anglo American soaring, up 5.5 percent and BHP Billiton and Rio Tinto also ending sharply higher.
Autos were also sharply higher, due to the positive sentiment towards China, with France's Renault and Peugeot Citroen and Germany's BMW all closing in positive territory.
Shares in British budget airline Ryanair pared gains by the close, but still ended 4.9 percent higher after the carrier raised its annual profit forecast for the year by 25 percent after a strong summer.
Hargreaves Lansdown saw shares shoot up 7 percent by the close, after it reported "record levels" of revenue, assets under administration and active client numbers.
Oil prices however slumped in Wednesday's trade, as concerns remained over the combination of an oversupply in production and weakening demand growth. Brent crude trading around $48.50 per barrel, while U.S. WTI crude sank to $45.15.
Meanwhile in Europe, the region's migrant crisis continues to dominate the agenda. On Wednesday, the head of the European Commission, Jean-Claude Juncker, gave a "state of the union" speech and said that the European Union must relocate 160,000 refugees within the bloc.