collapse of silicon valley bank uk. you re watching bbc news. many of us might like to take a weekend stroll in a beauty spot but here in the uk too many of them are seemingly marred by litter. one group of volunteers says they ve filled hundreds of bin bags with the rubbish collected from a set of lakes in north warwickshire in the midlands. amy cole went to find out more. take a look at this. there are 7a bags of rubbish along here, including some larger items such as this children s trike. it was all collected over the weekend. but look, there are all these white bags of rubbish, too, and that was all collected five weeks ago. and it s still to be disposed of. what s going on? beavering away along lea marston lakes is a small army of litter pickers. well, they told me this was a rubbish story and they weren t wrong. it s everywhere. phil, you re up to your eyeballs in the stuff. where is it all coming from? we ve got our work cut out. it s coming, we feel, from upstr