My life, you have raised a very important issue which many young black families face. It seems like there are not many safe places to move to without being the only black family in the whole neighbourhood or facing overt racism. It has now become a case of deciding which one is the lesser evil. Personally, having lived in south-east London for about several years now, I am 100% sure I do not want to raise my family here. Yes, the black community is very large here, but most areas are just so deprived that most children here are not given fair opportunities to enjoy their childhood and become responsible adults. From poor housing to poor education, no facilities, no parks, no space... Our children deserve better.
I am on the lookout for a better place to raise children, too. I was thinking more of leaving England entirely....
Keep us posted, my life! Just make sure you check out the new area properly and don't rush your decision.