Although Rabbi Halpern has repeatedly protested his innocence, a number of north-west London rabbis have said he is unfit to serve in a rabbinical office.
Meanwhile, a special Beth Din, convened by the Union of Orthodox Hebrew Congregations to look into the Halpern case, is expected to convene in London on Tuesday.
At least one of its three presiding judges from abroad, Rabbi Naftoli Nussbaum from Israel, is not due to attend himself but will instead send a deputy to hear evidence.
The Union has so far declined to clarify what remit the Beth Din has, its modus operandi or the length of the hearing.
