Hackney's Simon Marks Primary has parted company with its after-school club provider after a breakdown in relations.
Mapalim said it had "no choice" but to end its involvement after clashes with acting head Norma Blair-Clayden.
Writing to parents and carers, Mapalim director Sammy Fugler claimed there had been "daily problems" since Mrs Blair-Clayden took over as acting head. "We have had to fight very hard to stop the school introducing charges for Mapalim to use the building, which would have resulted in a 100 per cent increase in fees."
Mrs Blair-Clayden responded with a letter dismissing the allegations as "total fiction. Neither I or anyone associated with the school has made any proposal to charge Mapalim for use of the building for the after-school club. I am frankly amazed at the email that they sent and am asking for an explanation."
Neither Mapalim or Mrs Blair-Clayden would comment to the JC. However, Simon Marks governors' chair Peter Kessler said that "Mapalim have been running a popular and useful service at Simon Marks for the last two years, but sadly now have to move on.
"I am glad to say that the school is in the process of arranging a replacement service in time for next term."