Things that are free in the U.K.
Sights and experiences you can get for free in the U.K.
Free greeter programs around the world encourage locals to welcome you to their hometown
Free lodgings in Britain: Hospitality networks (couchsurfing), home swaps, and house sitting services
Couchsurfing and other hospitality networks allow you to sleep for free in other member's homes
Hospitality networks gather folks who are willing to put up fellow members in their homes for free or for a small fee
Ways to sleep for free in the U.K.
Sleep for free on vacation by watching someone's house (and, often, watering their plants and feeding their cat)
Trading spaces isn't just a show on basic cable anymore. It's a way to live life like a local on your travels absolutely for free—so long as you let the local borrow your life (and home) in return.
Programs like WWOOF and Helpx let you barter your services for a free place to stay
If you love sailing, or just have an unquenchable taste for adventure and new experiences, you can sign on to help crew a boat just about anywhere in the world, including the U.K.
A network of free stone cabins where you can sleep off the beaten path in the U.K.
Use Skype (and an internet connection) to make and receive free voice and video calls—or have your friends and family Skype your cell in the U.K. for 10¢ per minute or $1–$2 per month.
The Queen doesn't need a passport. Since all British passports are issued "In the name of Her Majesty," the Queen can just vouch for herself—though her husband Philip, son Prince Charles, and everyone one else in the household do have passports.