The discount scheme, which was introduced in March, gives motorists a maximum 5p per litre reduction in duty.

BBC: Fuel discount could be raised to 7.5p says isles MP

Why, then, are these pilots - offering a five pence reduction in fuel duty - only benefiting island communities?

BBC: Danny Alexander dampens fuel rebate hopes

Thamesdown Transport said this is due to the loss of subsidies from the council and a reduction in fuel duty rebate.

BBC: Bus fares go up in Swindon