Don't forget though with any bio plastic it is degradable and the last thing you would want is it to start breaking down before you have used the bale and judging by the tesco bags if its exposed to extremes like summer and winter it doesn't bode to well for it don't forget that most disposable shopping bags now don't have to survive that long.
We store ours in fertilser bags silage film in the inside part, netwrap in the outside as was sugested by one of the recycle people in our area as the outside bag is the same plastic as netwrap and plastic twine and the inside one the same as the film and it saves having to bring plastic bags in to bag it for it to go.
As for what it is used for it depends how clean it is most netwrap will probably end up in the landfill because the high level of contamination (straw etc) the film the same if it id covered in dung and soil. If it is relively good then road signs and black garden furniture products and according to the recycling people other low end products because a) its not spotless and b) because the dye in the plastic limits its uses. The same for spray cans and similar plastics due to the fact that although the resell value is greater not many manufactures want to use it as it wouldn't go down to well making things like baby bottles out of insecticide bottles no matter how clean they were.
That last bit was from a meeting we had to attend to have ours taken away on how to pack the pastic although it wasn't that condescending as it was really them basically saying we are not being singled out other industries and other EU staes are having to do the same and mainly pointing out the rules and things we have to abide by as well as that which they have to (mainly covering themselves if something went wrong). One big point was to make sure that the plastic wasn't cover in a load of manure or that the plastic bottles were triple rinsed and dry and not half full of water as they only have a licence to recycle low contaminated products which they are classed and so if something full of water bursts in the baler or it covered in mess that get a very big bill to clean it up which is passed on to the offending person.
Also they warned that some people were starting to get picked up on the foils off the top of spray containers as they were class as high risk you are ment to keep them contained and not free to blow around, should be triple rinsed and disposed of properly which the recycle company will probably do.