I've always thought ours is horrific, but some of the stories I have heard lately make ours look tame.
Two 4 week periods Dec-Jan and Jan-Feb, we used £110 worth of gas each and I thought that was alot. I do know someone who spent £800 in a quarter though.
Our's is a 3-bedroom detached bungalow by the way.
We're really looking at energy saving these days, we've made around 20% improvement in the last 12 months compared to the previous 12 months on our electric, but sadly gas is more difficult.