If you want to do something about this mess you might consider signing up for this Royal Mail Surveys. It involves posting and receiving items of mail in the post, you log-in to a website and enter the the details of the items of mail. For this they send you books of stamps 12x1st & 4x1st Large. I've been doing it for a year(in SE15) and have had about ?100+ worth of stamps. Sometimes they ask you to do a special survey where you record for 2 weeks the amount of post and any mis-deliveries you get, for this they pay you ?12 in 'Lovetoshop' vouchers. It can be quite time consuming on occasions(easy if your the organised type), so would be ideal for part-time workers, Pensioners or Mums and not ideal for commuting city types.