While previously the regulators took a more loose approach to Shariah Governance in some of the Gulf countries, in recent years there has been implementation of comprehensive Shariah Governance Frameworks.
One of the many areas which has been directly affected is Shariah Committee Memberships. Previously, there was no limit on the number of institutions that any individual could serve as a Shariah Committee Member within a particular jurisdiction.
After the implementation of comprehensive Shariah Governance Frameworks, there are now limits in place by the regulators. For example the Central Bank of KSA has limited it to 1 bank within the country, whereas in the UAE it has been limited to 3 memberships within the country. In both jurisdictions there might be exemptions at the discretion of the regulator.