SCIENCE
Swalk
Tuesday 31 January 2006 21:30-22:00 (Radio 4 FM)
With 115,000 postboxes to collect from and 82 million items of mail to deliver daily, our postmen walk hundreds of miles every working week to get our post to all 27 million addresses in the UK. Quentin Cooper explores how the latest science and technology is beginning to take some of the legwork out of the postal system and into the hands of the consumer.