I average about 31 mpg on my commute. Mainly city driving and A roads. However there's speed cameras most of the way limiting me to 30/40/50.
I avoid flooring it unless I know that the road ahead is clear. No point mashing the throttle just to stomp on the brakes in a few seconds. In fact, I hardly ever use my brakes at all, I just coast when I need to slow down / stop.
On motorways I get 40-50 mpg. Generally, acceleration and twisties are fun, not speed, so unless I'm gonna blast about at 130+, I'm happy to stick to the speed limit on motorways.
So yeh, my driving overall is pretty conservative, but it just makes the times I do put my foot down and have some fun all the more special.