M25 motorway
Changed the way people plan their lives. M25 expert Chris Marshall says "You can get around London in ways that you couldn't do before and it doesn't just change the lives of people who lived around it before, or who worked around it before, you find that actually it changes the way that people plan their lives. So now not only does someone who lived in Harlow when it was opened have the opportunity to work somewhere else, but someone say who works say in Heathrow can buy a house on the other side of London."