Recommendations for Quiet(ish) Roads for a Learner Driver

I have my daughter with me over Christmas and she is learning to drive. We have spent this afternoon up in the Noel Park area driving in circles around the roads (along with half the learner drivers in Haringey it seems).

As we graduate to more difficult and busy roads any thoughts as to where we can go to find roads that are a bit more open and quiet (if they exist?). Keen to get her skills and confidence up before I throw her to the lions of London's roads!

Thanks for any thoughts.