We see this every day. All day long there is flotsam & jetsam flowing by Leabank Square. Of course, we have always notified British Waterways whenever there has been a particularly bad pollution spill - but we can do our bit too. Whenever we are up in the Purple Garden on the riverbank - if you see anything floating by close to the bank - please safely retrieve it - and bin it.
It might seem a small insignificant floating pop bottle - but it all adds up.
In the meanwhile - I wonder what the Olympic Delivery Authority feel about hosting the 2012 games along the 4th worst river in England & Wales?