A barrister who, as a
result of information provided by the client or a witness called on behalf of
the client, is informed by the client or by the witness during a hearing or
after judgment or decision is reserved and while it remains pending, that the
client or a witness called on behalf of the client:
(a) has
lied in a material particular to the court or has procured another person to
lie to the court,
(b) has
falsified or procured another person to falsify in any way a document which
has been tendered, or
(c) has
suppressed or procured another person to suppress material evidence upon a
topic where there was a positive duty to make disclosure to the court,
must refuse to take
any further part in the case unless the client authorises the barrister to
inform the court of the lie, falsification or suppression and must promptly
inform the court of the lie, falsification or suppression upon the client
authorising the barrister to do so but otherwise must not inform the court of
the lie, falsification or suppression.