Tory Treasury Ministers refused on two separate occasions to commit Tory MEPs to support EU proposals on tax avoidance, said:
"Today the mask slipped as the Chancellor and his Ministers refused on two occasions to instruct their MEPs at the European Parliament to vote for anti-tax avoidance measures.
"The Tories need to put the record straight and say yes or no to whether they will support EU measures to clamp down on tax avoidance.
"Otherwise it clearly shows that the Tories say one thing when they think people are watching on tax avoidance but do another thing when they think no one's looking.
"And it further shows that a Tory Brexit would only mean that the Tories would openly work against the EU in clamping down on tax avoidance."