Chainsaw massacre on the Kennet and Avon?

I was taken aback when I read this Waterscape advice message today:

Claverton

Sunday 4 August 2013 until further notice
Please navigate with care between Claverton and Dundas due to falling limbs restricting the channel width.

Enquiries: 03030404040


"'Ere Bert, looks like there's a lot of logs in the water here."
"Those aren't logs, Fred, they're legs."

"Bert, what's that man doing on the aqueduct?"
"Oh, don't worry about 'im. He seems pretty 'armless."