I've cracked it! Finally! After all these years of experimenting I have finally discovered....How to make the perfect iced tea. Sometimes I amaze myself.
Take... one earl grey teabag. A teaspoon of loose english breakfast... fill your teapot. Stir in six teaspoons of sugar. Stand for five-ten minutes. Take a two litre bottle, and pour in around ten teaspoons of sugar. Add a cup or so of lemon juice (enough to get a few fingers' depth in the bottom of the bottle). Shake. Fill about half-full with water. Shake.
Once your tea is done brewing, pour it into the bottle (strain out any leaves). Leave to cool, then put in the fridge.