diff --git a/src/main/java/uk/org/iay/incommon/mda/validate/string/AcceptStringValueValidator.java b/src/main/java/uk/org/iay/incommon/mda/validate/string/AcceptStringValueValidator.java
new file mode 100644
index 0000000..79931ab
--- /dev/null
+++ b/src/main/java/uk/org/iay/incommon/mda/validate/string/AcceptStringValueValidator.java
@@ -0,0 +1,73 @@
+/*
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package uk.org.iay.incommon.mda.validate.string;
+
+import javax.annotation.Nonnull;
+
+import net.shibboleth.metadata.Item;
+import net.shibboleth.metadata.validate.BaseValidator;
+import net.shibboleth.metadata.validate.Validator;
+import net.shibboleth.utilities.java.support.annotation.constraint.NonnullAfterInit;
+import net.shibboleth.utilities.java.support.component.ComponentInitializationException;
+
+/**
+ * A <code>Validator</code> that accepts a fixed {@link String} value.
+ *
+ * This validator returns {@link net.shibboleth.metadata.validate.Validator.Action#DONE}
+ * if the value is matched, thus terminating any validator sequence.
+ */
+public class AcceptStringValueValidator extends BaseValidator implements Validator<String> {
+
+    /** Value to be accepted by this validator. */
+    @NonnullAfterInit
+    private String value;
+
+    /**
+     * Returns the value.
+     *
+     * @return Returns the value.
+     */
+    @NonnullAfterInit
+    public String getValue() {
+        return value;
+    }
+
+    /**
+     * Sets the value to be accepted.
+     *
+     * @param v the value to set.
+     */
+    public void setValue(@Nonnull final String v) {
+        value = v;
+    }
+
+    @Override
+    public Action validate(@Nonnull final String e, @Nonnull final Item<?> item, @Nonnull final String stageId) {
+        if (e.equals(value)) {
+            return Action.DONE;
+        } else {
+            return Action.CONTINUE;
+        }
+    }
+
+    @Override
+    protected void doInitialize() throws ComponentInitializationException {
+        super.doInitialize();
+
+        if (getValue() == null) {
+            throw new ComponentInitializationException("value to be matched can not be null");
+        }
+    }
+}
diff --git a/src/main/java/uk/org/iay/incommon/mda/validate/string/package-info.java b/src/main/java/uk/org/iay/incommon/mda/validate/string/package-info.java
new file mode 100644
index 0000000..3c2101a
--- /dev/null
+++ b/src/main/java/uk/org/iay/incommon/mda/validate/string/package-info.java
@@ -0,0 +1,18 @@
+/*
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * Validation classes for {@link java.lang.String} values.
+ */
+package uk.org.iay.incommon.mda.validate.string;
diff --git a/src/main/resources/uk/org/iay/incommon/mda/beans.xml b/src/main/resources/uk/org/iay/incommon/mda/beans.xml
index 16f2c0c..fe4bcc6 100644
--- a/src/main/resources/uk/org/iay/incommon/mda/beans.xml
+++ b/src/main/resources/uk/org/iay/incommon/mda/beans.xml
@@ -38,6 +38,9 @@
     <bean id="inc.AcceptAllValidator" abstract="true"
         class="uk.org.iay.incommon.mda.validate.AcceptAllValidator"/>
 
+    <bean id="inc.AcceptStringValueValidator" abstract="true"
+        class="uk.org.iay.incommon.mda.validate.string.AcceptStringValueValidator"/>
+
     <bean id="inc.RejectAllValidator" abstract="true"
         class="uk.org.iay.incommon.mda.validate.RejectAllValidator"/>
 
diff --git a/src/test/java/uk/org/iay/incommon/mda/validate/string/AcceptStringValueValidatorTest.java b/src/test/java/uk/org/iay/incommon/mda/validate/string/AcceptStringValueValidatorTest.java
new file mode 100644
index 0000000..2b92d69
--- /dev/null
+++ b/src/test/java/uk/org/iay/incommon/mda/validate/string/AcceptStringValueValidatorTest.java
@@ -0,0 +1,47 @@
+
+package uk.org.iay.incommon.mda.validate.string;
+
+import java.util.List;
+
+import org.testng.Assert;
+import org.testng.annotations.Test;
+
+import net.shibboleth.metadata.ErrorStatus;
+import net.shibboleth.metadata.Item;
+import net.shibboleth.metadata.validate.Validator;
+import net.shibboleth.metadata.validate.Validator.Action;
+import uk.org.ukfederation.mda.MockItem;
+
+public class AcceptStringValueValidatorTest {
+
+    @Test
+    public void validateMatch() throws Exception {
+        final AcceptStringValueValidator v = new AcceptStringValueValidator();
+        v.setId("comp");
+        v.setValue("match");
+        v.initialize();
+
+        final Item<String> item = new MockItem("content");
+        final Validator.Action action = v.validate("match", item, "stage");
+        Assert.assertEquals(action, Action.DONE);
+
+        final List<ErrorStatus> errs = item.getItemMetadata().get(ErrorStatus.class);
+        Assert.assertEquals(errs.size(), 0);
+    }
+
+    @Test
+    public void validateMismatch() throws Exception {
+        final AcceptStringValueValidator v = new AcceptStringValueValidator();
+        v.setId("comp");
+        v.setValue("match");
+        v.initialize();
+
+        final Item<String> item = new MockItem("content");
+        final Validator.Action action = v.validate("no match", item, "stage");
+        Assert.assertEquals(action, Action.CONTINUE);
+
+        final List<ErrorStatus> errs = item.getItemMetadata().get(ErrorStatus.class);
+        Assert.assertEquals(errs.size(), 0);
+    }
+
+}