We recently successfully completed our ISO 9001:2008 registration audit, and should be receiving our certificate before the end of the year. Our registrar is accredited with both UKAS and ANAB, and is asking if we have a preference for which mark (or both) that we would like on our certificate. Is there an advantage to dual accreditation marks? Though we are based in the US, our major project clients are worldwide. TIA for any inputs and insights.