Have too big a public sector and all they can do is dream up new ways to tax us and create work for themselves in the process. It's a never ending spiral.
This carbon trading business is bonkers anyway. You either use energy or you don't yet you can now buy "green" electricity, etc. etc. Who are they trying to kid? It's the same stuff - they just charge you more because they've bought some "carbon credits". Do I look stupid? 
Most of my flying is on business. Will that come out of my personal allowance? Will I end up driving a Lupo because I go on a business trip every month or so? If not, it's going to be pretty easy to blag all your holidays on your business and burn as much as you like.
If the government really had the desire to change things, rather than find new ways of taxing us for not having the option of changing, they'd be investing in some technologies that will secure our future, or at least giving firm backing and consistent policies that will allow businesses to invest, instead of increasingly committing us to being at the mercy of fossil fuels from abroad.
Kevin
All governments have shown their total incompetance in doing anything green. One of my favs is "Salters Duck", a very clever way of extracting energy from waves ( just think, little costal erosion), that was killed by the nuclear industry by publishing falsified figures re the costs, and the DoE believed them. We could have had wave power 30 years ago, except the clowns in government killed it on the basis of these false figures. This technology is being used around the world in various places, Portugal, Japan, China etc, but britain hasn't got round to it yet, despite having a 30 year start. The country thinks in financial terms for everything, and that's why we are in such a mess.
Ken