VanHorck makes a good point ...... I think learning to fly out of a bigger airport certainly helps with your overall confidence. People seem to have no problem with the transition from a bigger airfield to flying out of a smaller one, but don't usually find it as easy vice versa.
I think it probably depends more on what you are going to do with your ppl and where you will do you flying?
If it's going to be mainly out of airfields like Old Buck, Seething for example, instead of Norwich airport? They are good airfields and as pointed out, will save you a fair amount of cash.
As with all flight training, you should pop over to each airfield you are interested in to have a chat and get a feel for the place first hand.
Good luck with your training!