At long last, maybe the tide is set to turn ... the item below is taken from the consumer action group website
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Royal Mail and Trading Standards have joined forces today to crack down on [problem] mail in the postal system across the UK.Under the initiative, Trading Standards will decide whether mail is a [problem] and alert Royal Mail, before writing to the company requesting they stop posting the items.
Alongside this, Royal Mail will warn the company about its actions before cancelling its contract if it continues to post s c a m mail.
Here's how you can now help stop s c a m mail – just cross out your details on the envelope, re-address it with FREEPOST – S C A M MAIL and pop it back in a post box.
http://www.actionfraud.police.uk/news/crackdown-on-[problem]-mail-delivered-to-residents-homes-sept14