Sugary Drinks Tax

Does my hon. Friend recognise that one concern that some of us have about a tax on sugary drinks is that although it seems an attractive idea as a one-off, it would set a precedent? There would then be moves to outlaw discounting, impose portion sizes and implement similar rules. [Interruption.] Many of us believe in the idea of freedom and the responsibility of the consumer, and do not like the idea of the Government imposing that sort of change.