That is not the problem.
Simple search for a piece of on-page content reveals that Google chooses .com as the content originator. Again in the results the page has problematic URL. Perhaps it's a redirect gone wrong but this could be solved simply by canonicalisation or 301 redirection.
This is in case Mick does not need both websites online. If he does there is still a solution but it would involve introducing geo specific signals to Google and setting preference in Google Webmaster Tools (among other things). Diversification of content would take time and may not be feasible in all cases.
