Green Brexit is impossible to guarantee, EU is warned

Exclusive: Leaked paper from group representing Tory MEPs says it will be impossible to ensure current standards are kept in Britain or EU

The European Conservative and Reformist group which represents Conservative MEPs has has said Brexit will make it "impossible" to guarantee that current environmental standards can be maintained in Britain or the EU.

A leaked document seen by the Guardian also calls for "the closest possible working relationship" between the EU and UK after Brexit, and for a "no regression clause" in future British trade deals.