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At 10:08 BST, the index had risen by 1.7 per cent to 5,243.61 points, Reuters reports.
This was the highest level seen since September of last year and was largely due to increases from a number of the big commodity companies.
Increases of up to 5.4 per cent were recorded by Fresnillo, Kazakhmys, Lonmin, Xstrata, Anglo American and Rio Tinto.
The sector has bounced back from the "bout of profit taking" that occurred yesterday, market strategist Nick Serff stated, adding: "After strong buying at yesterday's close, investors' index positions have become mixed this morning."
He noted that better-than-expected quarterly results from Intel in the US had helped to improve trading on the FTSE, with the chipmaker beating analyst estimates thanks to a revenue figure of $9.4 billion (£5.88 billion).
