We have a client with a Glasgow accommodation website, whose website is hosted on a .com domain. The site has enjoyed a selection of #1's and #2's in Google for their keywords.
Until about December 2005 the site was also listed in MSN.co.uk, but after that time they seem to be non-existent on msn.co.uk, but with excellent .com results. I have also seen something similar with other clients with .com sites, so I've reached the conclusion that msn is preferring .co.uk sites in its uk index (which makes sense, although their assumptions are wrong).
As such, I'm about to suggest that the business move their site's primary hosting to the .co.uk version. Iím confident this will help the msn listing, and since the business is UK based, I think it will help all round.
The concern I have is that if I do this, will I be risking the current good results they enjoy? Currently the .co.uk is setup to forward requests to the .com and I intend just to reverse this process. Is this type of redirect going to maintain the IBL and ranks they currently have? Its just domain forwarding as setup through the UK Reg registrar.