Place the teabags, boiling water and honey (if using) in a jug and brew according to packet instructions. Remove the teabags and chill the tea in the fridge.
Zest and juice the lemon.
Place chilled tea, lemon zest and lemon juice in a jug. Stir well.
Divide between 2 ice filled glasses and top with soda water.
Garnish with extra lemon slices and serve.
Notes
Note: nutritional information has been calculated without the optional honey.