On the 2nd July a judge in California ordered Google to hand over all the logs for YouTube to Viacom. Google have been hosting YouTube since November 2006 so this in 12 terabytes of data.
It’s likely that UK laws would prevent this (at the moment) but the data is not in the UK so that’s it then.
We all know that your user created content is being viewed years after (companies looking for old facebook/bebo websites when interviewing for example) but now it seems that access records are brought into question. What about a company looking back to see how often you accessed YouTube during the working day?
Digital data knows no national laws I guess.