Motorist with a council officer
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Islington Council threaten fines over running engines

5 August 2014 Last updated at 20:07 BST

A council in north London is threatening to hand out £20 fines to drivers who refuse to switch off their diesel engines while parked.

Islington Council says it aims to reduce air pollution.

Motoring journalist Mike Rutherford and Councillor Claudia Webbe, a Labour member of the authority, give their views on the policy.