diff --git a/app/controllers/admin/categories_controller.rb b/app/controllers/admin/categories_controller.rb
index 73e1599e94..9cf04697bd 100644
--- a/app/controllers/admin/categories_controller.rb
+++ b/app/controllers/admin/categories_controller.rb
@@ -4,13 +4,17 @@
 class Admin::CategoriesController < AdminController
   include TranslatableParams
 
-  before_action :check_klass
-  before_action :set_root, expect: [:destroy, :reorder]
   before_action :set_category, only: [:edit, :update, :destroy, :reorder]
+  before_action :set_root, except: [:destroy, :reorder]
+  before_action :check_klass
 
   def index
   end
 
+  def show
+    redirect_to action: :edit
+  end
+
   def new
     @category = Category.new
     @category.build_all_translations
@@ -75,24 +79,25 @@ def reorder_categories(category_ids)
   def category_params
     category_params = translatable_params(
       params.require(:category),
-      translated_keys: [:locale, :title, :description],
+      translated_keys: [:locale, :title, :description, :body],
       general_keys: [:category_tag, :parent_ids]
     )
     category_params[:parent_ids] ||= [@root.id]
     category_params
   end
 
-  def set_root
-    @root = current_klass.category_root
-  end
-
   def set_category
     @category = Category.find(params[:id])
   end
 
+  def set_root
+    @root = current_klass&.category_root
+  end
+
   helper_method :current_klass
   def current_klass
-    params.fetch(:model_type, 'PublicBody').safe_constantize
+    @klass ||= @category.root.title.safe_constantize if @category&.root
+    @klass ||= params.fetch(:model_type, 'PublicBody').safe_constantize
   end
 
   def check_klass
diff --git a/app/helpers/admin/link_helper.rb b/app/helpers/admin/link_helper.rb
index 698decba76..d9241392d8 100644
--- a/app/helpers/admin/link_helper.rb
+++ b/app/helpers/admin/link_helper.rb
@@ -102,6 +102,12 @@ def track_thing_both_links(track_thing)
     link_to(icon, icon_link, title: title) + ' ' + "#{track_thing.id}:"
   end
 
+  def category_both_links(category)
+    # No public links, yet?
+    link_to(category.title, edit_admin_category_path(category),
+            title: admin_title)
+  end
+
   def admin_title
     'View full details'
   end
diff --git a/app/models/category.rb b/app/models/category.rb
index 9b9ac796f3..6267131809 100644
--- a/app/models/category.rb
+++ b/app/models/category.rb
@@ -16,6 +16,8 @@
 # categories and translatable titles/descriptions.
 #
 class Category < ApplicationRecord
+  include Notable
+
   has_many :parent_relationships,
            class_name: 'CategoryRelationship',
            foreign_key: 'child_id',
@@ -39,7 +41,10 @@ class Category < ApplicationRecord
            class_name: 'HasTagString::HasTagStringTag'
 
   translates :title, :description
+  translates :body, touch: true
   include Translatable
+  delegate :body, :body=, :body?, to: :translation
+  after_save { body.save if body.changed? }
 
   validates :title, presence: true
   validate :check_tag_assignments, on: :update
@@ -54,6 +59,16 @@ def tree
   end
 
   def list
+    Category.where(id: list_ids).includes(:translations)
+  end
+
+  def root
+    Category.roots.find { _1.list_ids.include?(id) }
+  end
+
+  protected
+
+  def list_ids
     sql = <<~SQL.squish
       WITH RECURSIVE nested_categories AS (
         SELECT child_id
@@ -70,8 +85,7 @@ def list
       INNER JOIN nested_categories nc ON c.id = nc.child_id;
     SQL
 
-    ids = Category.find_by_sql([sql, { parent_id: id }]).map(&:id)
-    Category.where(id: ids).includes(:translations)
+    Category.find_by_sql([sql, { parent_id: id }]).map(&:id)
   end
 
   private
@@ -85,4 +99,8 @@ def check_tag_assignments
       message: "can't be changed as there are associated objects present"
     )
   end
+
+  class Translation # :nodoc:
+    has_rich_text :body
+  end
 end
diff --git a/app/models/concerns/notable.rb b/app/models/concerns/notable.rb
index a9f1739cb7..bd881c2f8f 100644
--- a/app/models/concerns/notable.rb
+++ b/app/models/concerns/notable.rb
@@ -10,7 +10,10 @@ module Notable
   end
 
   def all_notes
-    concrete_notes.with_translations + tagged_notes.with_translations
+    notes = concrete_notes.with_translations
+    return notes.to_a unless Taggable.models.include?(self.class)
+
+    notes + tagged_notes.with_translations
   end
 
   def tagged_notes
diff --git a/app/views/admin/categories/_form.html.erb b/app/views/admin/categories/_form.html.erb
index 1d1cd4cfde..dff92bdf17 100644
--- a/app/views/admin/categories/_form.html.erb
+++ b/app/views/admin/categories/_form.html.erb
@@ -40,3 +40,9 @@
     <% end %>
   </div>
 <% end %>
+
+
+<h2>Notes</h2>
+
+<%= render partial: 'admin/notes/show',
+  locals: { notes: @category.all_notes, notable: @category } %>
diff --git a/app/views/admin/categories/_locale_fields.html.erb b/app/views/admin/categories/_locale_fields.html.erb
index 77134a75a6..bc4e5e7221 100644
--- a/app/views/admin/categories/_locale_fields.html.erb
+++ b/app/views/admin/categories/_locale_fields.html.erb
@@ -11,3 +11,10 @@
     <%= t.text_field :description, class: "span4" %>
   </div>
 </div>
+
+<div class="control-group">
+  <%= t.label :body, class: 'control-label' %>
+  <div class="controls">
+    <%= t.rich_text_area :body %>
+  </div>
+</div>
diff --git a/doc/CHANGES.md b/doc/CHANGES.md
index 99cea028db..e1aa74cc4a 100644
--- a/doc/CHANGES.md
+++ b/doc/CHANGES.md
@@ -2,6 +2,7 @@
 
 ## Highlighted Features
 
+* Allow categories to have notes associated with them (Graeme Porteous)
 * Add styling option and rich text editor to the notes admin (Graeme Porteous)
 * Strengthen 2FA warning. Users *must* remember to keep this code safe (Gareth
   Rees)
diff --git a/spec/controllers/admin/categories_controller_spec.rb b/spec/controllers/admin/categories_controller_spec.rb
index 78b9a1f9b4..67a0d5572f 100644
--- a/spec/controllers/admin/categories_controller_spec.rb
+++ b/spec/controllers/admin/categories_controller_spec.rb
@@ -27,6 +27,14 @@
     end
   end
 
+  describe 'GET show' do
+    it 'redirects to the edit action' do
+      category = FactoryBot.create(:category)
+      get :show, params: { id: category.id }
+      expect(response).to redirect_to(edit_admin_category_path(category))
+    end
+  end
+
   describe 'GET new' do
     it 'assigns root for correct model' do
       get :new, params: { model_type: 'PublicBody' }
@@ -255,7 +263,7 @@
       }
     end
 
-    it 'assigns root for correct model' do
+    it 'overrides model type param in favor of the categories root' do
       patch :update, params: {
         model_type: 'PublicBody',
         id: category.id,
@@ -268,7 +276,7 @@
         id: category.id,
         category: params
       }
-      expect(assigns(:root)).to eq(InfoRequest.category_root)
+      expect(assigns(:root)).to eq(PublicBody.category_root)
     end
 
     it 'finds the category to update' do
diff --git a/spec/models/category_spec.rb b/spec/models/category_spec.rb
index 4f0b12a7e5..2b1a69aec1 100644
--- a/spec/models/category_spec.rb
+++ b/spec/models/category_spec.rb
@@ -12,8 +12,11 @@
 #
 
 require 'spec_helper'
+require 'models/concerns/notable'
 
 RSpec.describe Category, type: :model do
+  it_behaves_like 'concerns/notable', :category
+
   set_fixture_class has_tag_string_tags: HasTagString::HasTagStringTag
 
   let(:category) { FactoryBot.build(:category) }
@@ -214,4 +217,36 @@
       expect { list.each(&:title) }.to_not change { @query_count }
     end
   end
+
+  describe '#root' do
+    subject { branch.root }
+
+    let(:root) do
+      FactoryBot.create(:category, title: 'PublicBody')
+    end
+
+    let(:trunk) do
+      FactoryBot.create(:category, title: 'Trunk', parents: [root])
+    end
+
+    let(:branch) do
+      FactoryBot.create(:category, title: 'Branch', parents: [trunk])
+    end
+
+    it 'returns uppermost root category' do
+      expect(branch.root).to eq(root)
+    end
+  end
+
+  describe 'translations' do
+    def plain_body
+      category.body_translations.transform_values(&:to_plain_text)
+    end
+
+    it 'adds translated body' do
+      expect(plain_body).to_not include(es: 'content')
+      AlaveteliLocalization.with_locale(:es) { category.body = 'content' }
+      expect(plain_body).to include(es: 'content')
+    end
+  end
 end