Axiomatic

If someobody goes missing, it can be vital to inform the police quickly so that they can assess the risks involved.

ACOPO Definition of a missing person...

Anyone whose whereabouts is unknown, whatever the circumstances of disappearance. They will be considered missing until located and their well-being or otherwise established.

Organisations allowed UK death registration information

Experian Ltd
Faraday Tracing Bureau Ltd
Synectics Solutions Ltd
Tracesmart Ltd
rpmi Ltd
CallCredit Ltd
Mortality Manifest Ltd
Equifax Plc
ATMOS Data Services Limited
Prudential Distribution Limited

(From Identity and Passport Service)

These claim to have 1 billion records but unfortunately for searchers, this does not mean that they cover the whole popluation. The records include...

The edited electorial roll, containing 55% of those registered to vote.
Weekly DDRI notifications of deaths registered in the UK, (including 900,000 Jan2007-Sept 2008), although the uses of this data is limited¬ to "prevention, detection, investigation or prosecution of offences, or avoiding crime". Also full name and date of birth must be provided.

UK MISSING PERSONS
UK POLICE If someobody goes missing, it can be vital to inform the police quickly so that they can assess the risks involved. ACOPO Definition of a missing person... Anyone whose whereabouts is unknown, whatever the circumstances of disappearance. They will be considered missing until located and their well-being or otherwise established.
Guidance given to the Police

"Missing People" appears to be able to use information held by the government to find somebody's UK address. They cannot forward a letter (or even a message) directly, so they write to the person to ask whether they want to receive a letter. However, unless the missing person ticks the "Yes" box and returns the form, the letter is not forwarded. Also "missing people" is a charity which is very short of money, and only makes this service available to people who have been missing for less than 5 years. (This information was taken from their web site, emailed replies, and a phone conversation, and was believed to be true on 2011-10-30) The government's ONS "Traceline", did offer a similar but not time-limited service, has now been disbanded. In the larger US, services to find missing persons appear to be better developed.
Missing people	Missing people now use Tracesmart¬

Organisations allowed UK death registration information Experian Ltd Faraday Tracing Bureau Ltd Synectics Solutions Ltd Tracesmart Ltd rpmi Ltd CallCredit Ltd Mortality Manifest Ltd Equifax Plc ATMOS Data Services Limited Prudential Distribution Limited (From Identity and Passport Service)

Other tracing services
192.com¬	DIY techniques

Note that I am not an expert, so the above is likely to be incomplete, and may even be innacurate. It is also not maintained, so will become out of date as police procedure change.

"Missing People" Charity


Tracesmart These claim to have 1 billion records but unfortunately for searchers, this does not mean that they cover the whole popluation. The records include... The edited electorial roll, containing 55% of those registered to vote. Weekly DDRI notifications of deaths registered in the UK, (including 900,000 Jan2007-Sept 2008), although the uses of this data is limited¬ to "prevention, detection, investigation or prosecution of offences, or avoiding crime". Also full name and date of birth must be provided.
Watch out for repeat credit card payments from Tracesmart¬	What to do about repeat credit card payments

Salvation Army

Research at University of York