Electric cars face being fitted with tracking devices under proposals for a pay-per-mile road taxation system put forward by the Government's own climate advisers. 

The Climate Change Committee (CCC) says the Government needs to find ways to cover the "significant hole" in the public finances left by the loss of fuel duty and other taxes when petrol and diesel cars are replaced by electric models.

The new report also calls for the cost of renewable projects to be shifted from electricity bills into general taxation, a move it says could cut energy bills by £90.