Labour, as part of their relaxation of the gambling laws, was all set to introduce super-casinos, as I recall - the first to be situated in Manchester. This the coalition reversed, which I think was the right call.
As to the National Lottery - I am not a massive fan, because such draws are just luck, and the odds are poor. Those who have little spend proportionately more of their income on such lotteries.
I dont know how much the lottery contribute to good causes and sport - we can see the benefit of the money when it comes to the Olympics and Team GB. I dont think we should get into the situation of funding healthcare through the lottery - that lets the government off the hook, bigtime.
The argument about large jackpots vs smaller jackpots but more winners has been had lots of times. Camelot always argued that having large jackpots draws more punters in, and they might well be right, however much I personally would favour a draw offering the opportunity to make more millionaires, rather than a few multi millionaires......