For information about Americans who may have been affected by the
bombings in London, call (888) 407-4747. Friends and relatives worried about loved ones can call the casualty helpline on 0870 1566 344.
Police in London have also set up an anti-terrorist hotline on 0800 789 321. The Transport For London interactive service on Sky Active has all the latest information on London transport closures. To access the service, press "interactive" and select Sky Active. Alternatively, call TFL on 0208 358 0101 or go to the website.
In order to help commuters get home, TFL has announced that all riverboat services on the Thames are free. Go to the website to see where and when you can pick up a boat. A US emergency telephone line has been set up for missing Americans on 1-888-407-4747. Police have asked people not to call 999 unless they have a life threatening emergency. (hat tip Greatscat )