Stupid idea.
Why should I have to carry around a reusable cup on the basis that I may at some point during the day want a hot drink. It's not going to fit in my pockets.
Also a take away coffee becomes more expensive than a have in coffee, but if there is a rush an the cafe has no more china cups as they are behind in washing them up, do I have to still pay the tax for a take away cup although I'm not taking it away.
Rather than apply yet another indirect tax, it would be better for the coffee chains to develop a fully recyclable cup, an trade on their Green policies.
Stop talking sense doesn't fit with controlling socialist green policies. Their answer is always tax the f@@k out of any normal hard working person.