Green Party members staged a demonstration against pollution in London during rush hour yesterday (April 8).

Alistair Polson said: “Britain has some of the worst air pollution in Europe but the Government has failed to tackle it.

"Air pollution is now a public health emergency. Londoners are literally choking on exhaust fumes. We think London should follow Paris and make public transport free during outbreaks of smog.

"The Green Party is calling for low-emission zones, fewer motorised vehicles, more electric taxis and cheaper public transport.”

In recent weeks, record levels of air pollution have been recorded in London and the south east, with warnings sent out for people with heart conditions and asthma to stay indoors.