diff --git a/mdx/uk/beans.xml b/mdx/uk/beans.xml
index c499dc0d..8fa1324d 100644
--- a/mdx/uk/beans.xml
+++ b/mdx/uk/beans.xml
@@ -253,6 +253,19 @@
     </bean>
     
     
+    <!--
+        check_uk_expkeyname
+    -->
+    <bean id="check_uk_expkeyname" parent="XSLValidationStage"
+        p:id="check_uk_expkeyname">
+        <property name="XSLResource">
+            <bean parent="FilesystemResource">
+                <constructor-arg value="#{ systemProperties['basedir'] }/mdx/uk/check_uk_expkeyname.xsl"/>
+            </bean>
+        </property>
+    </bean>
+    
+    
     <!--
         check_uk_mdrps
     -->
@@ -401,6 +414,7 @@
                 <ref bean="checkSchemas"/>
                 <ref bean="CHECK_std"/>
                 <ref bean="check_ukreg"/>
+                <ref bean="check_uk_expkeyname"/>
                 <ref bean="check_uk_mdrps"/>
                 <ref bean="check_uk_urlenc"/>
                 <ref bean="mdui_dn_en_present"/>
diff --git a/mdx/uk/check_uk_expkeyname.xsl b/mdx/uk/check_uk_expkeyname.xsl
new file mode 100644
index 00000000..ad9258d1
--- /dev/null
+++ b/mdx/uk/check_uk_expkeyname.xsl
@@ -0,0 +1,41 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+
+	check_uk_expkeyname.xsl
+	
+    UKf-specific check that no KeyName elements appear in entities opted
+    in for inter-federation metadata exchange.
+	
+	Author: Ian A. Young <ian@iay.org.uk>
+
+-->
+<xsl:stylesheet version="1.0"
+	xmlns:ds="http://www.w3.org/2000/09/xmldsig#"
+	xmlns:md="urn:oasis:names:tc:SAML:2.0:metadata"
+	xmlns:mdrpi="urn:oasis:names:tc:SAML:metadata:rpi"
+	xmlns:ukfedlabel="http://ukfederation.org.uk/2006/11/label"
+	xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
+	xmlns="urn:oasis:names:tc:SAML:2.0:metadata">
+
+	<!--
+		Common support functions.
+	-->
+	<xsl:import href="../_rules/check_framework.xsl"/>
+
+
+	<!--
+		If a UK-registered entity is opted in to the export aggregate, it MUST
+		NOT have any KeyName elements.
+	-->
+	<xsl:template match="md:EntityDescriptor
+		[descendant::mdrpi:RegistrationInfo[@registrationAuthority='http://ukfederation.org.uk']]
+		[md:Extensions/ukfedlabel:ExportOptIn]
+		[descendant::ds:KeyName]">
+		<xsl:call-template name="error">
+			<xsl:with-param name="m">
+				<xsl:text>exported entity must not have a KeyName</xsl:text>
+			</xsl:with-param>
+		</xsl:call-template>
+	</xsl:template>
+	
+</xsl:stylesheet>