The names of more than 50 PwC partners and staff who received or shared confidential Federal Government data in the tax leaks affair remain hidden.

The man who was CEO of consultancy PwC Australia for the entire tax payments affair, Luke Sayers, has exited as chair of a charity he runs with his wife.

A group of around 20 PwC partners are allegedly preparing to campaign the firm over a "lack of accountability" in tax leaks scandal.

Disgraced consultancy PwC is refusing to reveal the “terms of reference” — the instructions it set — for its secret internal investigation into its decade-long tax leaks affair.

An alleged mastermind of the PwC global tax leaks scam has quietly left a role overseeing a powerful Federal Government tax advisory committee run by the peak body of the Australian legal profession.

The embattled Tax Practioners Board will be forced to reveal whether its former chair — who was in charge for the entire PwC tax leaks investigation —recused himself from the probe, including from board meetings.