The theological college based in Northwood in north west London said in a statement: "London School of Theology announces that on Sunday 24th February, Reverend Dr Calvin T Samuel provided his resignation from the position of Principal.
"Following an initial internal investigation by the Board of Trustees into the veracity of allegations raised against Reverend Dr Calvin T Samuel by an external party, we have accepted his decision to resign.
"Professor Graham Twelftree has been appointed acting Principal."
Premier understands Prof Graham Twelftree will be the acting Principal until October at least, and will possibly stay in that position until next January. He is currently the Academic Dean at LST.
Rev Dr Calvin Samuel has been Principal since 2017, is a Methodist minister and was previously the Academic Dean of St John's College at the University of Durham and Director of Wesley Study Centre.
He's been a regular contributor on Bible questions on Premier's Inspirational Breakfast show.
Premier has contacted Dr Calvin for a comment.
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