Pump prices fall across Europe for holiday motorists despite slide in Sterling
Low cost of crude oil brings pump prices tumbling down across Europe despite weaker pound (www.postoffice.co.uk/holidaymotoring)
Biggest falls felt in Switzerland (unleaded petrol) and Greece (diesel)
Andorra offers cheapest fuel for the holiday motorist
Three-quarters of the 20 European countries surveyed offer sub-£1 litre of diesel
Pump prices have plummeted by 15-31