We started at the site of the new Civic Centre near Bell Corner/Bath Road in Hounslow. We walked through to Cranford, picking up several bags of rubbish along the way. Some of the group started out from here, and a few other people joined us along the way. 
It is sad, but not really surprising how much rubbish is thrown about. Much of it is the invariably single-use packaging that accompanies fast food, but cigarette packets and particularly cigarette butts play a huge part in the amount of discarded and unsightly litter.
Grass verges along many areas of the Bath Road were unsightly, particularly around bus stops and near some fast food stores.