Despite being a staunch opponent of a rise in fuel duty costs, Conservative MP Robert Halfon will vote later against a Labour motion calling for January's 3p per litre rise to be delayed.
He told ITV News his Harlow constituents would understand his course of action is still geared towards keeping the cost down.
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David Cameron has addressed Parliament for the first time since Britain voted to leave the European Union.
The FTSE 100 Index fell to 2.55% to 5,982.2 at the closing bell as the financial markets continued to experience Brexit volatility.
Prime Minister David Cameron has called his Polish counterpart, Beata Szydło, to express concern over reported attacks on Polish migrants.