Looking for living people may have sensitive issues. People are aware of this and may not want to tell you if they know the person. Those people should contact the person and see if they want to talk to you.
Genealogy Message Boards
Various sites have Genealogy Message Boards - with Surname boards. These are
very good for finding information on your folks. BUT more to the point I have
found many cousins including two first cousins (twice removed)
Hence my favourite is Genforum
http://genforum.genealogy.com/my/
But I also like the Rootsweb and
Ancestry and Ancestry
UK message
boards - These are the same boards but with a slightly different interface. URL http://boards.ancestry.com/mbexec/script/main/rw
These sites like you to register and this service is free. It is not part of an
Ancestry chargeable subscription. (there are other places offering these kind of service but I have not
used)
I have seen people looking for current relatives
Address Lookups
Lost Friends Message Boards - many sites like this.
Entering your details is usually free - and people can contact you - if you want
to contact names you see it may require a subscription usually around 5
GBP - I am not saying you will make contact - it depends if your
relative decides to access the site
This one has some useful links
http://www.lookupuk.com/
as does this
http://www.people-search.co.uk/
the site itself will search for you but they charge.
Also do search for names at www.google.com - sometimes amazing what you find