The benchmark FTSE 100 was up 42 points, or 0.6 percent, at 7,494 after rallying 1 percent on Tuesday.
Miners Anglo American and Antofagasta both rose over 1 percent.
Glencore jumped 4.5 percent after it entered into a binding amendment agreement with Metals Acquisition Corp for the sale and purchase of Glencore's Cobar copper mine in New South Wales, Australia.
Oil & gas firm BP Plc climbed 1.7 percent and Shell added 1.3 percent.
Britvic, a producer of soft drinks, rallied 3.3 percent after posting a rise in full-year profit and revenue.
Chemicals maker Johnson Matthey tumbled 3.7 percent after reporting a slightly lower half-yearly profit.