Wilburforce - 4:16 pm on Aug 22, 2013 (gmt 0)
Could just be kids returning to school though.
Not here (UK: they don't return until 2 September). However, my server stats show a 50% increase on the same period last week in referrals from google.com against a 36% increase from google.co.uk, so that could have a partial bearing on it (but couldn't wholly account for it).
Also the increase in my overall trafic is wholly down to Google. If it was kids returning to school I would expect to see other non-UK traffic sources showing a similar trend.
So far it has only been a couple of days, so it could just be a short-term spike, but I live in hope!