EU vote too important to be dominated by Tory politics, says minister

Environment secretary Liz Truss appeals to supporters of other parties to vote for UK to remain in the European Union

A Conservative cabinet minister has made a direct plea to supporters of other political parties to vote in favour of Britain's membership of the EU by warning that Brexit would be a "hugely retrograde step" for the environment.

In an exclusive interview with the Guardian, the environment secretary, Liz Truss, said the referendum was too important to be dominated by internal Tory politics.