Very handy to use for getting around on the Tube. The print is small though, so if you are a baby boomer, use your readers. Laminated and of good quality. Holds up to use and the expected London showers.
Travel tip: Check the London Tube website for information on what lines will have shutdowns on the weekends. They are doing extensive refits and repairs on certain lines for the up coming 2012 Olympics. The information changes weekly.
AND: Buy an Oyster Card for very much reduced fares on the Tube, as well as all buses and some trains. You can easily buy them at the airport and local Tube stations, newsstands, and money change stands. Just put a certain amount of money on it and recharge it as needed. No need to buy in advance. I kept mine in the corner of an outside pocket of my crossbody travel purse and just held the purse up to the reader and did not have to constantly take it out and put it back. Learn the bus routes from around your hotel, online, before you go and just keep some notes with you! The site is full of route maps you can print also. Every stop has a bus spider map and tells you clearly the routes that those buses take. The drivers are very helpful, as well. It is very easy to use and you get to see everything as you go. Loved it! We traveled even at peak hours and had no issues.
MAKE VERY sure that you touch the card to the exit reader on the TUBE as it will drain your card if you don't. On buses, just get off; you do NOT use the reader as it will just charge you for that route.