Could this be added to the current Closed thread.
http://www.cableforum.co.uk/board/20...emergency.html
Obviously phones have advanced over the years since 7/7.
There are now apps for Android phones, I won't list any as there are several different variants.
Some allow the phone to call one number in an even if the phone is locked.
Two search options
ICE &
In Case of Emergency
It might be worth adding iPhone ones aswell.