How much do things cost in London and Galway? Galway London Petrol (1 litre)£1.27£1.39 Large bottle of water£1.32£1.00 1 mile taxi journey£1.31£4.01 Cheap meal£11.88£10.00 Taxi - fixed fee£3.25£3.00 Last updated on 21/07/2014 source