It is amazing how many stops take less than ten minutes to walk between!
So many journeys are actually far quicker on foot.
When you walk there is no chance of:
having to wait once on the platform
being squashed on the platform or once in the train
Also, when you walk, you dont have to stick to someone else's plan. Walking means you can pop in to a shop to pick up the newspaper, have a coffee, post a letter, get some loo roll, or buy that Valentine's gift for your significant other you have been meaning to take care of!
Walking also means you can plan your own route to suit your needs on a given day-- if you are late you can take a short cut If you have some time, stop off at the Tate on your way home, or for a drink at the pub with mates.
Walking is about flexibility, and thinking outside of the box!