Annie Mole's, webmaster of Going Underground, daily web log (blog).
If you like this you'll LURVE One Stop Short of Barking, THE fun and informative BOOK about travelling on the London Underground.
It's for the iFloo network. Geddit. Thanks to @Jemimah_Knight for alerting me to this on 9Gag's website - it's by or was at least found by the user tonypboy516.
Harry probably has an Oyster card magic wand to wave at any Floo Networks to pay for his travels. With a flourish and a cry of Undergroundio he'd be zipping around in no time.
"The magic, mystery & sometimes maddening shortcomings of London's Tube are documented with love, enthusiasm & sometimes despair by its unofficial social historian." The Guardian
