diff --git a/RIGS/admin.py b/RIGS/admin.py
index 49b8aa1e..541c6b53 100644
--- a/RIGS/admin.py
+++ b/RIGS/admin.py
@@ -1,25 +1,24 @@
 from django.contrib import admin
-from RIGS import models, forms
-from django.contrib.auth.admin import UserAdmin
-from django.utils.translation import ugettext_lazy as _
-from reversion.admin import VersionAdmin
-
-from django.contrib.admin import helpers
-from django.template.response import TemplateResponse
 from django.contrib import messages
-from django.db import transaction
+from django.contrib.admin import helpers
+from django.contrib.auth.admin import UserAdmin
 from django.core.exceptions import ObjectDoesNotExist
+from django.db import transaction
 from django.db.models import Count
 from django.forms import ModelForm
-
+from django.template.response import TemplateResponse
+from django.utils.translation import ugettext_lazy as _
 from reversion import revisions as reversion
+from reversion.admin import VersionAdmin
+
+from RIGS import models, forms
 
 # Register your models here.
 admin.site.register(models.VatRate, VersionAdmin)
 admin.site.register(models.Event, VersionAdmin)
 admin.site.register(models.EventItem, VersionAdmin)
-admin.site.register(models.Invoice)
-admin.site.register(models.Payment)
+admin.site.register(models.Invoice, VersionAdmin)
+admin.site.register(models.Payment, VersionAdmin)
 
 
 @admin.register(models.Profile)
diff --git a/RIGS/models.py b/RIGS/models.py
index dc73b0ca..3a10a22f 100644
--- a/RIGS/models.py
+++ b/RIGS/models.py
@@ -1,24 +1,21 @@
+from collections import Counter
+
 import datetime
 import hashlib
-import datetime
 import pytz
-
-from django.db import models
-from django.contrib.auth.models import AbstractUser
+import random
+import string
+from decimal import Decimal
 from django.conf import settings
+from django.contrib.auth.models import AbstractUser
+from django.core.exceptions import ValidationError
+from django.db import models
+from django.urls import reverse_lazy
 from django.utils import timezone
-from django.utils.functional import cached_property
 from django.utils.encoding import python_2_unicode_compatible
+from django.utils.functional import cached_property
 from reversion import revisions as reversion
 from reversion.models import Version
-import string
-
-import random
-from collections import Counter
-from decimal import Decimal
-
-from django.core.exceptions import ValidationError
-from django.urls import reverse_lazy
 
 
 # Create your models here.
@@ -532,7 +529,7 @@ class EventAuthorisation(models.Model, RevisionMixin):
 
 @reversion.register(follow=['payment_set'])
 @python_2_unicode_compatible
-class Invoice(models.Model):
+class Invoice(models.Model, RevisionMixin):
     event = models.OneToOneField('Event', on_delete=models.CASCADE)
     invoice_date = models.DateField(auto_now_add=True)
     void = models.BooleanField(default=False)
diff --git a/RIGS/templates/RIGS/invoice_detail.html b/RIGS/templates/RIGS/invoice_detail.html
index e1b77b6c..5670b7ef 100644
--- a/RIGS/templates/RIGS/invoice_detail.html
+++ b/RIGS/templates/RIGS/invoice_detail.html
@@ -6,20 +6,21 @@
     <div class="col-sm-12">
         <div class="row">
             <div class="col-sm-8">
-                <h2>Invoice {{ object.pk }} ({{ object.invoice_date|date:"d/m/Y"}})</h2>
+                <h2>Invoice {{ object.pk }} ({{ object.invoice_date|date:"d/m/Y" }})</h2>
             </div>
 
             <div class="col-sm-4 text-right">
                 <div class="btn-group btn-page">
-                <a href="{% url 'invoice_delete' object.pk %}" class="btn btn-default" title="Delete Invoice">
-                    <span class="glyphicon glyphicon-remove"></span> <span
+                    <a href="{% url 'invoice_delete' object.pk %}" class="btn btn-default" title="Delete Invoice">
+                        <span class="glyphicon glyphicon-remove"></span> <span
                             class="hidden-xs">Delete</span>
-                </a>
-                <a href="{% url 'invoice_void' object.pk %}" class="btn btn-default" title="Void Invoice">
-                    <span class="glyphicon glyphicon-ban-circle"></span> <span
+                    </a>
+                    <a href="{% url 'invoice_void' object.pk %}" class="btn btn-default" title="Void Invoice">
+                        <span class="glyphicon glyphicon-ban-circle"></span> <span
                             class="hidden-xs">Void</span>
-                </a>
-                <a href="{% url 'invoice_print' object.pk %}" target="_blank" title="Print Invoice" class="btn btn-default"><span
+                    </a>
+                    <a href="{% url 'invoice_print' object.pk %}" target="_blank" title="Print Invoice"
+                       class="btn btn-default"><span
                             class="glyphicon glyphicon-print"></span> <span
                             class="hidden-xs">Print</span></a>
                 </div>
@@ -83,9 +84,11 @@
 
                             <dt>Authorised by</dt>
                             <dd>
-                                {%  if object.event.authorised %}
+                                {% if object.event.authorised %}
                                     {{ object.event.authorisation.name }}
-                                    (<a href="mailto:{{ object.event.authorisation.email }}">{{ object.event.authorisation.email }}</a>)
+                                    (
+                                    <a href="mailto:{{ object.event.authorisation.email }}">{{ object.event.authorisation.email }}</a>
+                                    )
                                 {% endif %}
                             </dd>
 
@@ -172,6 +175,13 @@
                 </div>
             </div>
         </div>
+    </div>
 
+    <div class="col-sm-12 text-right">
+        <div>
+            <a href="{% url 'invoice_history' object.pk %}" title="View Revision History">
+                Last edited at {{ object.last_edited_at }} by {{ object.last_edited_by.name }}
+            </a>
+        </div>
     </div>
 {% endblock %}
diff --git a/RIGS/urls.py b/RIGS/urls.py
index c9ed8a04..b6d285b1 100644
--- a/RIGS/urls.py
+++ b/RIGS/urls.py
@@ -1,13 +1,12 @@
 from django.conf.urls import url
-from django.contrib.auth.views import password_reset
-
 from django.contrib.auth.decorators import login_required
-from RIGS import models, views, rigboard, finance, ical, versioning, forms
-from django.views.generic import RedirectView
+from django.contrib.auth.views import password_reset
 from django.views.decorators.clickjacking import xframe_options_exempt
+from django.views.generic import RedirectView
 
-from PyRIGS.decorators import permission_required_with_403
 from PyRIGS.decorators import api_key_required
+from PyRIGS.decorators import permission_required_with_403
+from RIGS import models, views, rigboard, finance, ical, versioning, forms
 
 urlpatterns = [
     # Examples:
@@ -144,6 +143,10 @@ urlpatterns = [
     url(r'^invoice/(?P<pk>\d+)/delete/$',
         permission_required_with_403('RIGS.change_invoice')(finance.InvoiceDelete.as_view()),
         name='invoice_delete'),
+    url(r'^invoice/(?P<pk>\d+)/history/$',
+        permission_required_with_403('RIGS.view_invoice')(versioning.VersionHistory.as_view()),
+        name='invoice_history', kwargs={'model': models.Invoice}),
+
     url(r'^payment/create/$',
         permission_required_with_403('RIGS.add_payment')(finance.PaymentCreate.as_view()),
         name='payment_create'),