My son started Nightingale Montessori on Ramsden Road this September and we couldn't be happier. Wonderful teachers, most of them have been there for years. Lovely big garden to play in and they also get to learn French, football, ballet, music and Drama. My son adores the teachers there and they have a wonderful online system where you can see what your children are doing week by week.
Its a very nurturing class and i'm extremely happy we decided to place our son there. He is learning so much but in a gentle loving environment, which is perfect for him. If you are looking for something similar for your child, i would highly recommend arranging a visit.