So I wrote to CRT about the man from Fountains. Jeff Whyatt replied
We do plan to litter pick at key destinations (only) so that we can be assured they have some attention. Thrupp is clearly a key contender for this in it’s own right – I think we do c 15 locations across 256 miles of canal so it’s not such a big commitment.
This means that on average in every 17 miles of canal there is only one place worthy of litter picking. Such a shame that the one place (in the case of Thrupp) is already kept clean by the locals. Money wasted, Ho hum!