New web site posting problems

Yesterday I bought a hosting agreement.
Yesterday I contacted the domain host and them to transfer the domain to the new hosting company.
Yesterday I got an email from the hosting company with all the login details etc
Yesterday I uploaded the site to the temporary viewing address the hosts gave me.
Today, people in the UK can see the site at the proper address but I can only see some temporary linux screen. Tried looking on a different pc and they see a different temporary screen.

Why cant I see the site that I posted

All the nameservers have been changed and the old holding company say they have completed the transfer.

 

if you did the change over yesterday, then you may have to wait a few more days for the domains new IP to be propagated over the internet. 48 to 72 hours.