Earlier in the year, Transport for London set about finding a way of quantifying how much travel in London could be made by foot or bike. They took data on all of the journeys Londoners made each day, stripped out those already walked or cycled and those that were too long, or involved carrying heavy tools and equipment, and a few other criteria.
The government set out its aims for the plan in its 2015 Conservative Party manifesto. The stated aim of the plan was to ensure the next generation inherits a better environment than the one we live in today, with cleaner air, water and seas, healthier wildlife, a low carbon economy and greater resource efficiency. The plan was originally due for release in December 2016.