According to the U.K.’s government communications watchdog, Ofcom, 30% of U.K. adults have a social profile on Facebook (up from 21% in 2007), but the share of 15-24 year-olds with a social profile has dropped from 55% in early 2008 to 50% this year. It’s not a massive fall, but it’s the first time the number has decreased.

Over the same period, however, Ofcom’s research showed a corresponding increase from 40% to 46% in social networking for the 25-34 year-old age group. The complete article with results can be found here.