Hi Neil
I played at Sprowston twice last August on a Golfbreaks package. You won't be disappointed the course is amazing. We were allowed to play off the very back tees which was certainly interesting!!! There are some HUGE greens, on one of the holes we had 14 putts between the 4 of us.
I would advise you to buy a course planner as there are some hidden bunkers and a fair bit of water.
We got talking to a greenkeeper on the course who told us they are hoping to stage a Euro Pro event in the very near future so that gives you some idea how good it is.
All in all this is prob the 2nd best parkland course i've ever played, only the Brabazon at the Belfry is better.
Hope you enjoy it, let me know what you think of it.