Litter Louts

Why is it that some people seem determined to spoil our beautiful village by dumping their rubbish wherever they coose? On a recent walk down by the river my children noticed a man with a wheelbarrow full of rubbish come down from Boat Croft & tip it over the edge of the bank down towards the river. By the time we got to the place he had disappeared but looking over the edge we saw a huge pile of rubbish, and not just garden waste. How are we supposed to teach our kids that littering is wrong if they see adults doing this??