Google.co.uk (UK results only) has for over 10 weeks now been dumping non .co.uk homepages from the index. Through these pages other pages are crawled and cached and ranking. This only affects non .co.uk domains so I assume itís geo-targeting. Sites are UK hosted (Iíve been to the DC), UK optimised, UK registered and some even have UK place names in the domains. They are all small business sites targeting local markets. No advertising, no affiliate.
Many of these sites have a .co.uk also. So my question is - if we ditch the .com, .tv and .net and switch to the .co.uk as the primary with a 301 redirect will this help? Should we be avoiding non .co.uk domains if we want to be found in Google.co.uk?
and got this reply
Peter, the same basic index drives our .co.uk search and our .com search and our .fr search and so on, so itís less likely to be a difference of inclusion and more likely to be a difference of degree. If you want to show up in the .co.uk search and you can migrate from a .com to a .co.uk easily with a 301, it might benefit you. I would try moving one directory as a test, and if that goes well, then you could migrate the whole thing.
Although may of the sites I manage that were affected have now recovered, I still have a number of affected domains - a .tv, .nets, .coms. I have tried a 301 to the .co.uk of one of them as a test and will post back on the results.