A barrister must
return a brief other than a brief to appear as soon as possible after the
barrister becomes aware that the barrister has information confidential to a
person other than the client which may, as a real possibility, be material to
the client’s case or to the advancement of the client’s interests,
being information which the barrister is prohibited from disclosing or using
unless the person entitled to the confidentiality consents to the barrister
disclosing or using the information as the barrister thinks fit.