If you want to read more about this kind of thing, there's a book named "Move Along, Please" by Mark Mason, who travelled from Land's End to John O'Groats (i.e,

If you want to read more about this kind of thing, there's a book named "Move Along, Please" by Mark Mason, who travelled from Land's End to John O'Groats (i.e, from one end of Great Britain to the other) using only buses. Took more than 24 hours, though.