the developer which i got rid of, was supposed to make sure that the staging was not indexed, i have put a do not follow in the robots file last week as i was not aware of the problem before that, not sure how to now get google to get rid of all the staging, i have been trying to find out in my site where he has redirected the staging but cannot find the place, this is causing me problems as many live articles under staging are going to the home page, so i really do not know what to do now.
can you explain more on the below
the new site has a sitewide anchor text link "gastric band hypnotherapy" in the main menu, whereas the old site did not. Google takes the overoptimized back links, adds it up with the new overoptimized internal links and that could have triggered something.
since the upgrade the whole site bombed in the rankings while before that the site was fine