My clients buy consultancy based on track record. As nice as an accountancy qualification is, it doesn't guarantee that someone will provide solid business advice, be a good implementor, or manage a project any more successfully than someone without a qualification.The most successful consultants (and consultancies) are those who deliver solid work to time and to budget. If clients get things accomplished or perceive themselves to have received value from a set of consultants, they'll use those consultants again regardless of any professional qualifications.