I will come on and be prepared to be flamed here, but I feel it's important to spell out why the average Brit isn't bothered -
I am fairly comfortable money wise. I see things happening in the media sometimes and it's awful, but it is not happening to me/anywhere close by.
Now, people will see that as heartless and selfish, but it isn't. It doesn't mean I don't take a double take, it just means it doesn't 'hit home' because it isn't near home. The same is true for bereavement for example. Child loss could happen to someone I know through a friend of a friend. I'd feel sad for them but that same evening I'd be going about my business. Life would be normal for me, whilst their world is turned upside down - That all changes obviously once it did happen to me. A completely different outlook because it has happened to me personally, and I've personally felt the effects.
I'll admit, I'm probably a bit thick when it comes to any science. And as a modern Brit, I really don't see what impact climate change would have on me? I, and millions of others, probably have a very false sense of security. I don't see how I could be negatively impacted by this.
So it's therefore not a huge worry - And naturally, leads me not to do much in the way of change.
I am doing a few things right I suppose - I only have 1 DC. I don't fly more than twice a year. I have friends flying every 6 weeks or so!
But I drive a lot. I have a disabled DC so probably use my car too much. I also like to eat out at places, I like shopping and consumerism. My only saving Grace is I don't like tat and rarely buy plastic!