However, some of the 200 residents who attended the meeting at Camden Civic Centre took the decision as a victory against Islamic radicalism.
All nine councillors voted unanimously to reject the application by the Qu'ranic Society for a school for 1200 students.
They argued that they had done so because a planning report to the council said it was an inappropriate development for the semi-rural area and would create traffic, parking and other problems.
This was despite the council receiving an unprecedented response to the development application - 3042 submissions were against and 23 in favour.
And after the meeting, some residents made it clear they did not want Muslims in the area.