diff --git a/CHANGELOG.txt b/CHANGELOG.txt
index 6c28594a9..ddd41d76e 100644
--- a/CHANGELOG.txt
+++ b/CHANGELOG.txt
@@ -8,6 +8,7 @@ Changelog
  * Snippets are now ordered alphabetically
  * Removed the "More" section from the admin menu
  * Added pagination to page listings in admin
+ * Support for setting a subpage_types property on page models, to define which page types are allowed as subpages
  * Fix: Animated GIFs are now coalesced before resizing
  * Fix: Wand backend clones images before modifying them
  * Fix: Admin breadcrumb now positioned correctly on mobile
diff --git a/CONTRIBUTORS.rst b/CONTRIBUTORS.rst
index d7222307d..a3f9c7221 100644
--- a/CONTRIBUTORS.rst
+++ b/CONTRIBUTORS.rst
@@ -28,6 +28,7 @@ Contributors
 * Ben Margolis
 * Tom Talbot
 * Jeffrey Hearn
+* Robert Clark
 
 Translators
 ===========
diff --git a/wagtail/tests/models.py b/wagtail/tests/models.py
index e061a4bfe..f798129dc 100644
--- a/wagtail/tests/models.py
+++ b/wagtail/tests/models.py
@@ -294,3 +294,16 @@ class ZuluSnippet(models.Model):
 
     def __unicode__(self):
         return self.text
+
+
+class StandardIndex(Page):
+    pass
+
+class StandardChild(Page):
+    pass
+
+class BusinessIndex(Page):
+    subpage_types = ['tests.BusinessChild']
+
+class BusinessChild(Page):
+    subpage_types = []
diff --git a/wagtail/wagtailadmin/templates/wagtailadmin/pages/add_subpage.html b/wagtail/wagtailadmin/templates/wagtailadmin/pages/add_subpage.html
index 757c013b5..1158cc857 100644
--- a/wagtail/wagtailadmin/templates/wagtailadmin/pages/add_subpage.html
+++ b/wagtail/wagtailadmin/templates/wagtailadmin/pages/add_subpage.html
@@ -12,9 +12,9 @@
     <div class="nice-padding">
         <p>{% trans "Choose which type of page you'd like to create." %}</p>
 
-        {% if all_page_types %}
+        {% if page_types %}
             <ul class="listing">
-                {% for content_type in all_page_types %}
+                {% for content_type in page_types %}
                     <li>
                         <div class="row row-flush">
                             <div class="col6">
diff --git a/wagtail/wagtailadmin/tests/test_pages_views.py b/wagtail/wagtailadmin/tests/test_pages_views.py
index 3da08de13..6c1f490dd 100644
--- a/wagtail/wagtailadmin/tests/test_pages_views.py
+++ b/wagtail/wagtailadmin/tests/test_pages_views.py
@@ -1,5 +1,5 @@
 from django.test import TestCase
-from wagtail.tests.models import SimplePage, EventPage
+from wagtail.tests.models import SimplePage, EventPage, StandardIndex, StandardChild, BusinessIndex, BusinessChild
 from wagtail.tests.utils import unittest, WagtailTestUtils
 from wagtail.wagtailcore.models import Page, PageRevision
 from django.core.urlresolvers import reverse
@@ -262,6 +262,11 @@ class TestPageCreation(TestCase, WagtailTestUtils):
         self.assertTemplateUsed(response, 'tests/simple_page.html')
         self.assertContains(response, "New page!")
 
+        # Check that the treebeard attributes were set correctly on the page object
+        self.assertEqual(response.context['self'].depth, self.root_page.depth + 1)
+        self.assertTrue(response.context['self'].path.startswith(self.root_page.path))
+        self.assertEqual(response.context['self'].get_parent(), self.root_page)
+
 
 class TestPageEdit(TestCase, WagtailTestUtils):
     def setUp(self):
@@ -759,3 +764,48 @@ class TestContentTypeUse(TestCase, WagtailTestUtils):
         self.assertEqual(response.status_code, 200)
         self.assertTemplateUsed(response, 'wagtailadmin/pages/content_type_use.html')
         self.assertContains(response, "Christmas")
+
+
+class TestSubpageBusinessRules(TestCase, WagtailTestUtils):
+    def setUp(self):
+        # Find root page
+        self.root_page = Page.objects.get(id=2)
+
+        # Add standard page
+        self.standard_index = StandardIndex()
+        self.standard_index.title = "Standard Index"
+        self.standard_index.slug = "standard-index"
+        self.root_page.add_child(instance=self.standard_index)
+
+        # Add business page
+        self.business_index = BusinessIndex()
+        self.business_index.title = "Business Index"
+        self.business_index.slug = "business-index"
+        self.root_page.add_child(instance=self.business_index)
+
+        # Add business child
+        self.business_child = BusinessChild()
+        self.business_child.title = "Business Child"
+        self.business_child.slug = "business-child"
+        self.business_index.add_child(instance=self.business_child)
+
+        # Login
+        self.login()
+
+    def test_standard_subpage(self):
+        response = self.client.get(reverse('wagtailadmin_pages_add_subpage', args=(self.standard_index.id, )))
+        self.assertEqual(response.status_code, 200)
+        self.assertContains(response, 'Standard Child')
+        self.assertContains(response, 'Business Child')
+
+    def test_business_subpage(self):
+        response = self.client.get(reverse('wagtailadmin_pages_add_subpage', args=(self.business_index.id, )))
+        self.assertEqual(response.status_code, 200)
+        self.assertNotContains(response, 'Standard Child')
+        self.assertContains(response, 'Business Child')
+
+    def test_business_child_subpage(self):
+        response = self.client.get(reverse('wagtailadmin_pages_add_subpage', args=(self.business_child.id, )))
+        self.assertEqual(response.status_code, 200)
+        self.assertNotContains(response, 'Standard Child')
+        self.assertEqual(0, len(response.context['page_types']))
diff --git a/wagtail/wagtailadmin/views/pages.py b/wagtail/wagtailadmin/views/pages.py
index a611a0647..9a42b7ddf 100644
--- a/wagtail/wagtailadmin/views/pages.py
+++ b/wagtail/wagtailadmin/views/pages.py
@@ -55,13 +55,11 @@ def add_subpage(request, parent_page_id):
     if not parent_page.permissions_for_user(request.user).can_add_subpage():
         raise PermissionDenied
 
-    page_types = sorted([ContentType.objects.get_for_model(model_class) for model_class in parent_page.clean_subpage_types()], key=lambda pagetype: pagetype.name.lower())
-    all_page_types = sorted(get_page_types(), key=lambda pagetype: pagetype.name.lower())
+    page_types = sorted(parent_page.clean_subpage_types(), key=lambda pagetype: pagetype.name.lower())
 
     return render(request, 'wagtailadmin/pages/add_subpage.html', {
         'parent_page': parent_page,
         'page_types': page_types,
-        'all_page_types': all_page_types,
     })
 
 
@@ -364,6 +362,10 @@ def preview_on_create(request, content_type_app_name, content_type_model_name, p
         parent_page = get_object_or_404(Page, id=parent_page_id).specific
         page.set_url_path(parent_page)
 
+        # Set treebeard attributes
+        page.depth = parent_page.depth + 1
+        page.path = Page._get_children_path_interval(parent_page.path)[1]
+
         # This view will generally be invoked as an AJAX request; as such, in the case of
         # an error Django will return a plaintext response. This isn't what we want, since
         # we will be writing the response back to an HTML page regardless of success or
diff --git a/wagtail/wagtailadmin/views/userbar.py b/wagtail/wagtailadmin/views/userbar.py
index 6e6ef3492..41776f684 100644
--- a/wagtail/wagtailadmin/views/userbar.py
+++ b/wagtail/wagtailadmin/views/userbar.py
@@ -1,9 +1,13 @@
 from django.shortcuts import render
+from django.contrib.auth.decorators import permission_required
 
 from wagtail.wagtailadmin.userbar import EditPageItem, AddPageItem, ApproveModerationEditPageItem, RejectModerationEditPageItem
 from wagtail.wagtailadmin import hooks
 from wagtail.wagtailcore.models import Page, PageRevision
 
+
+
+@permission_required('wagtailadmin.access_admin')
 def for_frontend(request, page_id):
     items = [
         EditPageItem(Page.objects.get(id=page_id)),
@@ -24,6 +28,8 @@ def for_frontend(request, page_id):
         'items': rendered_items,
     })
 
+
+@permission_required('wagtailadmin.access_admin')
 def for_moderation(request, revision_id):
     items = [
         EditPageItem(PageRevision.objects.get(id=revision_id).page),
@@ -44,4 +50,4 @@ def for_moderation(request, revision_id):
     # Render the edit bird
     return render(request, 'wagtailadmin/userbar/base.html', {
         'items': rendered_items,
-    })
\ No newline at end of file
+    })
diff --git a/wagtail/wagtailcore/models.py b/wagtail/wagtailcore/models.py
index b7e3d349e..5c3f9d1c5 100644
--- a/wagtail/wagtailcore/models.py
+++ b/wagtail/wagtailcore/models.py
@@ -1,7 +1,6 @@
-import sys
-import os
 from StringIO import StringIO
 from urlparse import urlparse
+import warnings
 
 from modelcluster.models import ClusterableModel
 
@@ -101,30 +100,29 @@ def get_page_types():
     return _PAGE_CONTENT_TYPES
 
 
-LEAF_PAGE_MODEL_CLASSES = []
-_LEAF_PAGE_CONTENT_TYPE_IDS = []
-
-
 def get_leaf_page_content_type_ids():
-    global _LEAF_PAGE_CONTENT_TYPE_IDS
-    if len(_LEAF_PAGE_CONTENT_TYPE_IDS) != len(LEAF_PAGE_MODEL_CLASSES):
-        _LEAF_PAGE_CONTENT_TYPE_IDS = [
-            ContentType.objects.get_for_model(cls).id for cls in LEAF_PAGE_MODEL_CLASSES
-        ]
-    return _LEAF_PAGE_CONTENT_TYPE_IDS
-
-
-NAVIGABLE_PAGE_MODEL_CLASSES = []
-_NAVIGABLE_PAGE_CONTENT_TYPE_IDS = []
-
+    warnings.warn("""
+        get_leaf_page_content_type_ids is deprecated, as it treats pages without an explicit subpage_types
+        setting as 'leaf' pages. Code that calls get_leaf_page_content_type_ids must be rewritten to avoid
+        this incorrect assumption.
+    """, DeprecationWarning)
+    return [
+        content_type.id
+        for content_type in get_page_types()
+        if not getattr(content_type.model_class(), 'subpage_types', None)
+    ]
 
 def get_navigable_page_content_type_ids():
-    global _NAVIGABLE_PAGE_CONTENT_TYPE_IDS
-    if len(_NAVIGABLE_PAGE_CONTENT_TYPE_IDS) != len(NAVIGABLE_PAGE_MODEL_CLASSES):
-        _NAVIGABLE_PAGE_CONTENT_TYPE_IDS = [
-            ContentType.objects.get_for_model(cls).id for cls in NAVIGABLE_PAGE_MODEL_CLASSES
-        ]
-    return _NAVIGABLE_PAGE_CONTENT_TYPE_IDS
+    warnings.warn("""
+        get_navigable_page_content_type_ids is deprecated, as it treats pages without an explicit subpage_types
+        setting as 'leaf' pages. Code that calls get_navigable_page_content_type_ids must be rewritten to avoid
+        this incorrect assumption.
+    """, DeprecationWarning)
+    return [
+        content_type.id
+        for content_type in get_page_types()
+        if getattr(content_type.model_class(), 'subpage_types', None)
+    ]
 
 
 class PageManager(models.Manager):
@@ -209,10 +207,6 @@ class PageBase(models.base.ModelBase):
         if not cls.is_abstract:
             # register this type in the list of page content types
             PAGE_MODEL_CLASSES.append(cls)
-        if cls.subpage_types:
-            NAVIGABLE_PAGE_MODEL_CLASSES.append(cls)
-        else:
-            LEAF_PAGE_MODEL_CLASSES.append(cls)
 
 
 class Page(MP_Node, ClusterableModel, Indexed):
@@ -259,9 +253,6 @@ class Page(MP_Node, ClusterableModel, Indexed):
     def __unicode__(self):
         return self.title
 
-    # by default pages do not allow any kind of subpages
-    subpage_types = []
-
     is_abstract = True  # don't offer Page in the list of page types a superuser can create
 
     def set_url_path(self, parent):
@@ -416,10 +407,10 @@ class Page(MP_Node, ClusterableModel, Indexed):
     def is_navigable(self):
         """
         Return true if it's meaningful to browse subpages of this page -
-        i.e. it currently has subpages, or its page type indicates that sub-pages are supported,
+        i.e. it currently has subpages,
         or it's at the top level (this rule necessary for empty out-of-the-box sites to have working navigation)
         """
-        return (not self.is_leaf()) or (self.content_type_id not in get_leaf_page_content_type_ids()) or self.depth == 2
+        return (not self.is_leaf()) or self.depth == 2
 
     def get_other_siblings(self):
         # get sibling pages excluding self
@@ -484,25 +475,30 @@ class Page(MP_Node, ClusterableModel, Indexed):
             where required
         """
         if cls._clean_subpage_types is None:
-            res = []
-            for page_type in cls.subpage_types:
-                if isinstance(page_type, basestring):
-                    try:
-                        app_label, model_name = page_type.split(".")
-                    except ValueError:
-                        # If we can't split, assume a model in current app
-                        app_label = cls._meta.app_label
-                        model_name = page_type
+            subpage_types = getattr(cls, 'subpage_types', None)
+            if subpage_types is None:
+                # if subpage_types is not specified on the Page class, allow all page types as subpages
+                res = get_page_types()
+            else:
+                res = []
+                for page_type in cls.subpage_types:
+                    if isinstance(page_type, basestring):
+                        try:
+                            app_label, model_name = page_type.split(".")
+                        except ValueError:
+                            # If we can't split, assume a model in current app
+                            app_label = cls._meta.app_label
+                            model_name = page_type
+
+                        model = get_model(app_label, model_name)
+                        if model:
+                            res.append(ContentType.objects.get_for_model(model))
+                        else:
+                            raise NameError(_("name '{0}' (used in subpage_types list) is not defined.").format(page_type))
 
-                    model = get_model(app_label, model_name)
-                    if model:
-                        res.append(model)
                     else:
-                        raise NameError(_("name '{0}' (used in subpage_types list) is not defined.").format(page_type))
-
-                else:
-                    # assume it's already a model class
-                    res.append(page_type)
+                        # assume it's already a model class
+                        res.append(ContentType.objects.get_for_model(page_type))
 
             cls._clean_subpage_types = res
 
@@ -652,13 +648,8 @@ class Page(MP_Node, ClusterableModel, Indexed):
 
 def get_navigation_menu_items():
     # Get all pages that appear in the navigation menu: ones which have children,
-    # or are a non-leaf type (indicating that they *could* have children),
     # or are at the top-level (this rule required so that an empty site out-of-the-box has a working menu)
-    navigable_content_type_ids = get_navigable_page_content_type_ids()
-    if navigable_content_type_ids:
-        pages = Page.objects.filter(Q(content_type__in=navigable_content_type_ids)|Q(depth=2)|Q(numchild__gt=0)).order_by('path')
-    else:
-        pages = Page.objects.filter(Q(depth=2)|Q(numchild__gt=0)).order_by('path')
+    pages = Page.objects.filter(Q(depth=2)|Q(numchild__gt=0)).order_by('path')
 
     # Turn this into a tree structure:
     #     tree_node = (page, children)