blog migration install issue

Hello,

I am in the process of trnafering my website from one domain to another. I have a wp blog setup under mydomain.com/blog

I used ftp to create a new directory named blog on the new domain.
Then uploaded the files from the old server to the new.

I then uploaded the database via my cpanel on the new domain.

in php admin (cpanel) I created a new user and added it to the uploaded database giving the user all privilages.

I then edited wp-config.php to reflect the changes.

The problem I have is this. On the new domain (camelotmarquees.com/blog) the blog appears. However when trying to log in with /wp-admin the url changes back to the old domain (camelot-marquees.co.uk/wp-admin) and it tells me no update required.

Please see for yourself by checking our the domains.

What have i done wrong and how do I correct this so my old blog becomes available on the new domain?