The results I'm seeing in the UK on both .co.uk and .com for the niches I follow just don't look right to me. For example there's one site that was given a -10 penalty a few weeks back that has moved back to its previous position. It looks to me like they have not applied some of the ranking factors and in particular manual penalties to these results.
My morning checks look different to the last few days, relatively minor shuffling. Perhaps they are adding back some of the ingredients they forgot.