Anti-pollution campaigners staged a demonstration outside the VW dealership in Leicester over the scandal of rigged exhaust emission tests in the USA.The company has launched a worldwide investigation to see how widespread is the use of the software which underestimated pollution rates by up to 40 times.The protest came as the Government announced it was to re-test cars to compare their lab results with real-world driving emissions.Transport Secretary Patrick McLoughlin's announcement came hours...
