In an ongoing and constantly updated WebmasterWorld thread, it appears some people are reporting major shifts in Google UK. People are saying that the search results dramatically changed. But some suspect that the UK specific filter that makes Google UK, umm, UK specific, was turned off.

Here are some of the reports in the thread:

Senior member, InternetHeaven said that Google does occasional flip the UK filter switch off. He said in response to the UK results looking like US results:

About a year ago, there was a major Google UK shakeup, which resulted in an explanation from Matt Cutts on the state of Google UK. Just two days ago, Matt Cutts did a new video on the UK Google results. Here it is:

So is something up?

Forum discussion at WebmasterWorld.