Karl Bushby is back and England walking back to his hometown and starting point. He circumnavigated the globe, including walking across the Bering Strait on ice and swimming the Caspian sea because both routes around it were closed to him.
He did use transport in at least one instance - he couldn't get a long-term visa in Russia and had to leave every 90 days and go back to where he left off.
https://en.wikipedia.org/wiki/Karl_Bushby