I think that you'll find that pcso's do have power....
read on and learn a bit about them.....
http://www.policecommunitysupportoff...BB2/powers.php - there are quite a few laws on there applicable to pcso's that are not applicable to street wardens..
and the pcso's have nothing to do with the council as they are controlled by (in this case) lancashire constabulary..they are also paid by them and the training is also by the police which is why they have more power than the street wardens which will soon be defunct...