This from the Ilford Guardian. We don't normally put up things wholesale from newspapers but this seems a good cause.
'Martin Barron, 53, was last seen at his home in Clandon Road in Ilford on Saturday (April 2) at around 4pm.
Mr Barron suffers from epilepsy and dementia. He is dependent on his carers and does not have any medication with him.
He is white, 5ft 2in, and of medium build. He has several tattoos, mostly on his left arm, including one of the name 'Robbie'.
Mr Barron has been known to frequent the King's Cross and Heathrow areas. His family said he had not gone missing before.
Anyone with information should call the Missing Persons Unit at Ilford Police station 020 8345 2700.'