diff --git a/code/controllers/AssetAdmin.php b/code/controllers/AssetAdmin.php
index 295f4aea..8d8d46f2 100644
--- a/code/controllers/AssetAdmin.php
+++ b/code/controllers/AssetAdmin.php
@@ -253,7 +253,7 @@ JS
 			// TODO Replace with lazy loading on client to avoid performance hit of rendering potentially unused views
 			new LiteralField(
 				'Tree',
-				$treeField->createTag(
+				FormField::create_tag(
 					'div', 
 					array(
 						'class' => 'cms-tree', 
diff --git a/code/controllers/ContentController.php b/code/controllers/ContentController.php
index c7756dd4..ac382833 100644
--- a/code/controllers/ContentController.php
+++ b/code/controllers/ContentController.php
@@ -340,18 +340,6 @@ HTML;
 		}
 	}
 
-	/**
-	 * Returns the xml:lang and lang attributes.
-	 * 
-	 * @deprecated 2.5 Use ContentLocale() instead and write attribute names suitable to XHTML/HTML
-	 * templates directly in the template.
-	 */
-	public function LangAttributes() {
-		Deprecation::notice('2.5', 'Use ContentLocale() instead and write attribute names suitable to XHTML/HTML instead.');
-		$locale = $this->ContentLocale();
-		return "xml:lang=\"$locale\" lang=\"$locale\"";	
-	}
-	
 	/**
 	 * Returns an RFC1766 compliant locale string, e.g. 'fr-CA'.
 	 * Inspects the associated {@link dataRecord} for a {@link SiteTree->Locale} value if present,
diff --git a/code/model/SiteTree.php b/code/model/SiteTree.php
index e1b771a1..1057ca74 100644
--- a/code/model/SiteTree.php
+++ b/code/model/SiteTree.php
@@ -998,14 +998,6 @@ class SiteTree extends DataObject implements PermissionProvider,i18nEntityProvid
 		return SiteConfig::current_site_config();
 	}
 
-	/**
-	 * @deprecated 3.0 Use prepopulate_permission_cache() instead (without the extraneous "p" in "prepopulate")
-	 */
-	static public function prepopuplate_permission_cache($permission = 'CanEditType', $ids, $batchCallback = null) {
-		Deprecation::notice("3.0", "Use prepopulate_permission_cache instead.");
-		self::prepopulate_permission_cache($permission, $ids, $batchCallback);
-	}
-
 	/**
 	 * Pre-populate the cache of canEdit, canView, canDelete, canPublish permissions.
 	 * This method will use the static can_(perm)_multiple method for efficiency.
@@ -2520,15 +2512,6 @@ class SiteTree extends DataObject implements PermissionProvider,i18nEntityProvid
 		return $this->_cache_statusFlags;
 	}
 
-	
-	/**
-	 * @deprecated 3.0 Use getTreeTitle()
-	 */
-	public function TreeTitle() {
-		Deprecation::notice('3.0', 'Use getTreeTitle() instead.');
-		return $this->getTreeTitle();
-	}
-	
 	/**
 	 * getTreeTitle will return three <span> html DOM elements, an empty <span> with
 	 * the class 'jstree-pageicon' in front, following by a <span> wrapping around its
diff --git a/code/model/SiteTreeDecorator.php b/code/model/SiteTreeDecorator.php
deleted file mode 100644
index 18c6f3e2..00000000
--- a/code/model/SiteTreeDecorator.php
+++ /dev/null
@@ -1,14 +0,0 @@
-<?php
-/**
- * @package    cms
- * @subpackage model
- * @deprecated 3.0 Use {@link SiteTreeExtension}.
- */
-abstract class SiteTreeDecorator extends SiteTreeExtension {
-
-	public function __construct() {
-		Deprecation::notice('3.0', 'Use SiteTreeExtension instead.');
-		parent::__construct();
-	}
-
-}
diff --git a/code/reports/Report.php b/code/reports/Report.php
index 35fafadf..4a94569f 100644
--- a/code/reports/Report.php
+++ b/code/reports/Report.php
@@ -137,28 +137,6 @@ class SS_Report extends ViewableData {
 		);
 	}
 
-	/**
-	 * @deprecated 3.0
-	 * All subclasses of SS_Report now appear in the report admin, no need to register or unregister.
-	 *
-	 * Register a report.
-	 * @param $list The list to add the report to: "ReportAdmin" or "SideReports"
-	 * @param $reportClass The class of the report to add.
-	 * @param $priority The priority.  Higher numbers will appear furhter up in the reports list.
-	 * The default value is zero.
-	 */
-	static public function register($list, $reportClass, $priority = 0) {
-		Deprecation::notice('3.0', 'All subclasses of SS_Report now appear in the report admin, no need to register');
-	}
-
-	/**
-	 * @deprecated 3.0
-	 * All subclasses of SS_Report now appear in the report admin, no need to register or unregister.
-	 */
-	static public function unregister($list, $reportClass) {
-		self::add_excluded_reports($reportClass);
-	}
-
 	/**
 	 * Exclude certain reports classes from the list of Reports in the CMS
 	 * @param $reportClass Can be either a string with the report classname or an array of reports classnames