[duggie]

approx 90 pence per ltr is tax, it's the goverment we need to be protested against not the garages,
United Kingdom
Main article: Hydrocarbon oil duty
From 4th January 2011 the UK duty rate for the road fuels unleaded petrol, diesel, biodiesel and bioethanol is GB£0.5895 per litre (£2.65 per imperial gallon or £2.20 per U.S. gallon).[3] Value Added Tax at 20% is also charged on the price of the fuel and on the duty.

Using the UK average untaxed pump price for unleaded petrol of £0.4572 per litre (from the December 2010 average taxed price of £1.221 per litre,[4] the duty rate of £0.5819 per litre[3] and the then VAT rate of 17.5%) this would give a January 2011 taxed price of £1.256 per litre (£5.71 per imperial gallon or £4.75 per U.S. gallon) - that is equivalent to a tax rate of 175%.

Diesel for use by farmers and construction vehicles is coloured red (Red Diesel) and has a much reduced tax, currently £0.1133 per litre.[3]

Jet fuel used for international aviation attracts no duty, and no VAT