Put ice cubes in a long glass, preferably one thin enough so that the cubes stand atop eachother. Pour healthy measure of Gordons gin over the ice. Pour tonic in, amount depends on taste but i prefer about 3 parts tonic to one part gin. Rub lime around rim of glass and give it a mighty squeeze to get a nice lot of juice into the drink and drop lime in too. Give a quick stir. Lie back and enjoy.
It's so refreshing that it's very difficult to just drink one or two so watch out for Sea Breeze casualties in the hot sun. Let us all know how you get on