http://news.bbc.co.uk/1/hi/england/london/4664209.stmExamples:
Philip Russell has been missing since Thursday morning when he called his parents and then his work to say he was just getting on a bus and was going to be late.
He did not turn up to work and no-one can get hold of him or has heard from him since. He is thought to have been in the area of the bus explosion.
Philip will be 29 years old on 11 July.
SHAHARA A ISLAMShahara is 20 and has not been seen since Thursday morning. A British-Bangladeshi Muslim woman, she lives with her parents in Plaistow, east London.
She is thought to have been on her way to work, passing through the area where the Aldgate/Liverpool Street Underground bomb detonated.
Shahara works for the Co-operative Bank at Angel, Islington, and left home wearing her uniform of black trousers and white top and carrying a Burberry Bag. A member of the family received a "missed call" on his mobile from Shahara around the time that the bombs detonated.
Her family has made exhaustive searches of the hospitals and made extensive contact with friends who may know of her whereabouts.
Shahara's uncle, Nazmul Hasan, said that his niece is a lively young woman who makes friends easily. He said it would be totally out of character for a girl so close to her family to disappear without warning.