diff --git a/mod/assign/gradingtable.php b/mod/assign/gradingtable.php
index 82d3edff58b94..5aa1dbd245d0f 100644
--- a/mod/assign/gradingtable.php
+++ b/mod/assign/gradingtable.php
@@ -302,14 +302,8 @@ public function __construct(assign $assignment,
                 if (!empty($markerfilter)) {
                     if ($markerfilter == ASSIGN_MARKER_FILTER_NO_MARKER) {
                         $where .= ' AND (uf.allocatedmarker IS NULL OR uf.allocatedmarker = 0)';
-                    } else {
-                        $where .= ' AND uf.allocatedmarker = :markerid';
-                        $params['markerid'] = $markerfilter;
                     }
                 }
-            } else { // Only show users allocated to this marker.
-                $where .= ' AND uf.allocatedmarker = :markerid';
-                $params['markerid'] = $USER->id;
             }
         }
 
diff --git a/mod/assign/locallib.php b/mod/assign/locallib.php
index 6fa5f6bce8be9..e28217b3fe54b 100644
--- a/mod/assign/locallib.php
+++ b/mod/assign/locallib.php
@@ -1783,7 +1783,7 @@ public function list_participants_with_filter_status_and_group($currentgroup) {
      * @return array List of user records
      */
     public function list_participants($currentgroup, $idsonly) {
-        global $DB;
+        global $DB, $USER;
 
         if (empty($currentgroup)) {
             $currentgroup = 0;
@@ -1797,6 +1797,7 @@ public function list_participants($currentgroup, $idsonly) {
             $fields = 'u.*';
             $orderby = 'u.lastname, u.firstname, u.id';
             $additionaljoins = '';
+            $additionalfilters = '';
             $instance = $this->get_instance();
             if (!empty($instance->blindmarking)) {
                 $additionaljoins .= " LEFT JOIN {assign_user_mapping} um
@@ -1818,11 +1819,26 @@ public function list_participants($currentgroup, $idsonly) {
                 $orderby = "COALESCE(s.timecreated, " . time() . ") ASC, COALESCE(s.id, " . PHP_INT_MAX . ") ASC, um.id ASC";
             }
 
+            if ($instance->markingworkflow &&
+                    $instance->markingallocation &&
+                    !has_capability('mod/assign:manageallocations', $this->get_context())) {
+
+                $additionaljoins .= ' LEFT JOIN {assign_user_flags} uf
+                                     ON u.id = uf.userid
+                                     AND uf.assignment = :assignmentid3';
+
+                $params['assignmentid3'] = (int) $instance->id;
+
+                $additionalfilters .= ' AND uf.allocatedmarker = :markerid';
+                $params['markerid'] = $USER->id;
+            }
+
             $sql = "SELECT $fields
                       FROM {user} u
                       JOIN ($esql) je ON je.id = u.id
                            $additionaljoins
                      WHERE u.deleted = 0
+                           $additionalfilters
                   ORDER BY $orderby";
 
             $users = $DB->get_records_sql($sql, $params);
diff --git a/mod/assign/tests/locallib_test.php b/mod/assign/tests/locallib_test.php
index 01ad095e10c02..8ec2f967dfce6 100644
--- a/mod/assign/tests/locallib_test.php
+++ b/mod/assign/tests/locallib_test.php
@@ -2174,15 +2174,18 @@ public function test_markerallocation() {
 
         // Check the allocated marker can view the submission.
         $this->setUser($this->teachers[0]);
-        $gradingtable = new assign_grading_table($assign, 100, '', 0, true);
-        $output = $assign->get_renderer()->render($gradingtable);
-        $this->assertEquals(true, strpos($output, $this->students[0]->lastname));
 
+        $users = $assign->list_participants(0, true);
+        $user = reset($users);
+        $this->assertEquals($this->students[0]->id, $user->id);
+
+        $cm = get_coursemodule_from_instance('assign', $assign->get_instance()->id);
+        $context = context_module::instance($cm->id);
+        $assign = new testable_assign($context, $cm, $this->course);
         // Check that other teachers can't view this submission.
         $this->setUser($this->teachers[1]);
-        $gradingtable = new assign_grading_table($assign, 100, '', 0, true);
-        $output = $assign->get_renderer()->render($gradingtable);
-        $this->assertNotEquals(true, strpos($output, $this->students[0]->lastname));
+        $users = $assign->list_participants(0, true);
+        $this->assertEquals(0, count($users));
     }
 
     /**