Problems with install.php pointing to wrong place please help

I am trying to get my old blog back and have renstalled my blog on my server
When i try to login here
http://webyogi.co.uk/blog/wp-login.php
i cannot get to correct login screen. For some reason, my installation is being redirected to
http://www.webyogi.co.uk/marketing-social-media-consultancy/blogging/

Please can anyone explain why and how to fix the error please its driving me nuts….