Yell
Sign in from Yell.com
Click on profile, then Edit Profile.
Click on Manage your Website, then Manage Website.
Adding GTM to the Site TBA
Adding Form Tracking
Using the on-site builder, find & click on the Contact Form. Click on Submission, then Tracking & add the below tracking code:
<script>
var dataLayer = window.dataLayer || [];
dataLayer.push({'event' : 'contact-form-submitted'});
</script>