Professional Standards Act 2004

A scheme may—

specify the same maximum amount of liability in relation to all cases to which the scheme applies or different maximum amounts of liability for different cases or classes of case or for the same case or class of case for different purposes; and

confer a discretionary authority on an occupational association, on application by a person to whom the scheme applies, to specify in relation to the person a higher maximum amount of liability than would otherwise apply under the scheme in relation to the person either in all cases or in any specified case or class of case.