Some nice twisty roads out of Bristol, the section to Easter Compton has some pinch points. Severn Bridge has a good little Cafe and views over to Wales and the bridge.
Back road to Thornbury has nice twisty corners.
The ride up the A38 to Saul Junction is a typical single lane A road but worth in when you get there. Lots of parking and a good food, tea and Coffee at the cafe.