47.2mpg combined cycle in my 1.2 16V Bravo was the highest I ever achieved.
In the Bora I'm still testing, but I did have a 56.9mpg run the other day, that was 75% motorway, 25% town in rush hour traffic!
Cruising at anything below 2,000rpm in a petrol is stupid, since as soon as you touch the accelerator that tiny bit, the MPG drops. It's better to knock it down a gear and then accelerate, that way you're not underrevving the engine.