Google last night confirmed that the Panda update -released in the US a couple of months ago, is now live globally to all english speaking Google users. This also includes further feedback signals, not surprising given some of the feedback about the update when it was released in the US, as highlighted below
In some high-confidence situations, we are beginning to incorporate data about the sites that users block into our algorithms. In addition, this change also goes deeper into the “long tail” of low-quality websites to return higher-quality results where the algorithm might not have been able to make an assessment before. The impact of these new signals is smaller in scope than the original change: about 2% of U.S. queries are affected by a reasonable amount, compared with almost 12% of U.S. queries for the original change.
Initial analysis of the SERPs would suggest the impact of this is fairly limited, something which speaking to a couple of colleagues in the industry seems to be a view shared. It is however worth keeping an eye on this over the coming days, however if this is the extent of the impact I think many UK SEO’s will be breathing a significant sigh of relief