I was inspired by this post on the Eco Etsy blog...
...to reduce the amount of junk mail that's delivered to my house - but the site suggested on Eco Etsy is for the US.
A quick google search later, I found this UK website, where you can register up to 5 people from the same address to stop receiving junk mail for 5 years...amd it's freeee!
In 2007 4.54 billion pieces of addressed junk mail were delivered in the UK!!!