You have reached this default virtual host in error.
Note to admins: You have probably not set the correct IP address binding in the Vhost config.
You should be using one of:
<VirtualHost srv01283-public.soton.ac.uk:80>
<VirtualHost srv01283-public.soton.ac.uk:443>
Or:
<VirtualHost srv01283-private.soton.ac.uk:80>
<VirtualHost srv01283-private.soton.ac.uk:443>
Using this (the default) won't work:
<VirtualHost *:80>
<VirtualHost *:443>