I'm in the city centre, and, when I got my license (two years ago now), I used the BSM. They're a huge school, which meant I could swap around between instructors if I didn't like one (I didn't end up doing that), and it meant that I could have the lessons whenever was most convenient for me.
For what it's worth, I took about ten lessons, drove twice on my own, and passed the test first try. I wouldn't have taken so many lessons if I had a car I could practice on, but we were in between cars for some of the time.