diff --git a/module/VuFind/config/module.config.php b/module/VuFind/config/module.config.php
index c098ec11aced19af4b2c6099f9c0bb7797a51cc7..c02c8688629ddd669ef53b5f40f3c2c7b7ff3e80 100644
--- a/module/VuFind/config/module.config.php
+++ b/module/VuFind/config/module.config.php
@@ -742,7 +742,7 @@ $config = array(
                     },
                     'similar' => function ($sm) {
                         return new \VuFind\Related\Similar(
-                            $sm->getServiceLocator()->get('VuFind\SearchResultsPluginManager')
+                            $sm->getServiceLocator()->get('VuFind\Search')
                         );
                     },
                     'worldcateditions' => function ($sm) {
@@ -753,7 +753,7 @@ $config = array(
                     },
                     'worldcatsimilar' => function ($sm) {
                         return new \VuFind\Related\WorldCatSimilar(
-                            $sm->getServiceLocator()->get('VuFind\SearchResultsPluginManager')
+                            $sm->getServiceLocator()->get('VuFind\Search')
                         );
                     },
                 ),
diff --git a/module/VuFind/src/VuFind/Related/Similar.php b/module/VuFind/src/VuFind/Related/Similar.php
index 6a1192987650a54c723ae5c7a348a5bb6dc2e7f5..a349633dae131a7dbd92b0f34a8bc7edb0ff2833 100644
--- a/module/VuFind/src/VuFind/Related/Similar.php
+++ b/module/VuFind/src/VuFind/Related/Similar.php
@@ -46,20 +46,20 @@ class Similar implements RelatedInterface
     protected $results;
 
     /**
-     * Results plugin manager
+     * Search service
      *
-     * @var \VuFind\Search\Results\PluginManager
+     * @var \VuFindSearch\Service
      */
-    protected $resultsManager;
+    protected $searchService;
 
     /**
      * Constructor
      *
-     * @param \VuFind\Search\Results\PluginManager $results Results plugin manager
+     * @param \VuFindSearch\Service $results Results plugin manager
      */
-    public function __construct(\VuFind\Search\Results\PluginManager $results)
+    public function __construct(\VuFindSearch\Service $search)
     {
-        $this->resultsManager = $results;
+        $this->searchService = $search;
     }
 
     /**
@@ -74,8 +74,8 @@ class Similar implements RelatedInterface
      */
     public function init($settings, $driver)
     {
-        $this->results = $this->resultsManager->get('Solr')
-            ->getSimilarRecords($driver->getUniqueId());
+        $this->results
+            = $this->searchService->similar('Solr', $driver->getUniqueId());
     }
 
     /**
diff --git a/module/VuFind/src/VuFind/Related/WorldCatSimilar.php b/module/VuFind/src/VuFind/Related/WorldCatSimilar.php
index 11fbe3e0efd4d752996800e878b8bf3da490c6fb..8579cd074d53a1ece8e44c2e738395c0f25798a8 100644
--- a/module/VuFind/src/VuFind/Related/WorldCatSimilar.php
+++ b/module/VuFind/src/VuFind/Related/WorldCatSimilar.php
@@ -91,10 +91,8 @@ class WorldCatSimilar extends Similar
         }
 
         // Perform the search and save results:
-        $result = $this->resultsManager->get('WorldCat');
-        $params = $result->getParams();
-        $params->setLimit(5);
-        $params->setOverrideQuery($query);
-        $this->results = $result->getResults();
+        $queryObj = new \VuFindSearch\Query\Query($query);
+        $result = $this->searchService->search('WorldCat', $queryObj, 0, 5);
+        $this->results = $result->getRecords();
     }
 }
diff --git a/module/VuFind/src/VuFind/Search/Solr/Results.php b/module/VuFind/src/VuFind/Search/Solr/Results.php
index 712af62281cb26c7cbe744f660b5e251f22eb9c8..1e7543d7c1a94bdbeb61a6a50f8cac8deed35b88 100644
--- a/module/VuFind/src/VuFind/Search/Solr/Results.php
+++ b/module/VuFind/src/VuFind/Search/Solr/Results.php
@@ -408,21 +408,6 @@ class Results extends BaseResults
         return $list;
     }
 
-    /**
-     * Method to retrieve records similar to the provided ID.  Returns an
-     * array of record driver objects.
-     *
-     * @param string $id Unique identifier of record
-     *
-     * @return array
-     * @tag NEW SEARCH
-     */
-    public function getSimilarRecords($id)
-    {
-        $collection = $this->getSearchService()->similar($this->backendId, $id);
-        return $collection->getRecords();
-    }
-
     /**
      * Get complete facet counts for several index fields
      *