Hmm... I think I detect some small measure of sarcasm in this response. Not your finest post, methinks. Maybe, just maybe, there could be another way, rather than this 'contractual obligation' that's so wasteful, in so many respects. Maybe a system, used successfully in other countries, could be suggested instead..? In the present climate of reducing waste, and making best use of resources, is it beyond the wit of the UK collective to have a sign, a symbol, an expression of declination such as a sticker on the letterbox that all would recognise as being a refusal of unaddressed junk mail..? Keep the 'contractual obligation', but limit it to those not actively indicating that it is unwelcome. No dice..? Or must the status quo remain a fait accompli..?