diff --git a/app/main/views/invites.py b/app/main/views/invites.py
index 662d66cec..44d00296c 100644
--- a/app/main/views/invites.py
+++ b/app/main/views/invites.py
@@ -33,6 +33,7 @@ def accept_invite(token):
         session['invited_user'] = invited_user.serialize()
 
         if existing_user:
+
             user_api_client.add_user_to_service(invited_user.service,
                                                 existing_user.id,
                                                 invited_user.permissions)
diff --git a/app/main/views/register.py b/app/main/views/register.py
index 7400f113d..eaeeaf150 100644
--- a/app/main/views/register.py
+++ b/app/main/views/register.py
@@ -51,7 +51,7 @@ def register_from_invite():
     form.service.data = invited_user['service']
     form.email_address.data = invited_user['email_address']
 
-    return render_template('views/register-from-invite.html', form=form)
+    return render_template('views/register-from-invite.html', email_address=invited_user['email_address'], form=form)
 
 
 def _do_registration(form, service=None):
diff --git a/app/main/views/sign_in.py b/app/main/views/sign_in.py
index c2931b1cd..5b598e4ae 100644
--- a/app/main/views/sign_in.py
+++ b/app/main/views/sign_in.py
@@ -45,6 +45,11 @@ def sign_in():
         # Vague error message for login in case of user not known, locked, inactive or password not verified
         flash('Username or password is incorrect')
 
+    invited_user = session.get('invited_user')
+    if invited_user:
+        message = 'You already have an account with GOV.UK Notify. Sign in to your account to accept this invitation.'
+        flash(message, 'default')
+
     return render_template('views/signin.html', form=form)
 
 
diff --git a/app/templates/views/register-from-invite.html b/app/templates/views/register-from-invite.html
index 7e7e81aaa..df9cf8221 100644
--- a/app/templates/views/register-from-invite.html
+++ b/app/templates/views/register-from-invite.html
@@ -11,6 +11,7 @@ Create an account – GOV.UK Notify
 <div class="grid-row">
   <div class="column-two-thirds">
     <h1 class="heading-large">Create an account</h1>
+    <p>Your account will be created with this email: {{email_address}}</p>
     <form method="post" autocomplete="nope">
       {{ textbox(form.name, width='3-4') }}
       {{ textbox(form.mobile_number, width='3-4') }}
diff --git a/tests/app/main/views/test_accept_invite.py b/tests/app/main/views/test_accept_invite.py
index a302def3f..3e48e1f73 100644
--- a/tests/app/main/views/test_accept_invite.py
+++ b/tests/app/main/views/test_accept_invite.py
@@ -58,6 +58,10 @@ def test_existing_signed_out_user_accept_invite_redirects_to_sign_in(app_,
             assert response.status_code == 200
             page = BeautifulSoup(response.data.decode('utf-8'), 'html.parser')
             assert page.h1.string.strip() == 'Sign in'
+            flash_banners = page.find_all('div', class_='banner-default')
+            assert len(flash_banners) == 2
+            assert flash_banners[0].text.strip() == 'Please log in to access this page.'
+            assert flash_banners[1].text.strip() == 'You already have an account with GOV.UK Notify. Sign in to your account to accept this invitation.'  # noqa
 
 
 def test_new_user_accept_invite_calls_api_and_redirects_to_registration(app_,
@@ -100,6 +104,9 @@ def test_new_user_accept_invite_calls_api_and_views_registration_page(app_,
             page = BeautifulSoup(response.data.decode('utf-8'), 'html.parser')
             assert page.h1.string.strip() == 'Create an account'
 
+            email_in_page = page.find('p')
+            assert email_in_page.text.strip() == 'Your account will be created with this email: invited_user@test.gov.uk'  # noqa
+
             form = page.find('form')
             name = form.find('input', id='name')
             password = form.find('input', id='password')