Where can I find a lot of information on the funniest magician ever -
Tommy Cooper. When you type in his name for a normal search all you
get is jokes (usually Tim Vines not Tommy's) or adverts for his
video's and DVD's. I want to know things like 1. His stage work - 2.
Magic tricks and 3. His biography - Is there anywhere where this is
all available on the net?

Dear Tuftedduck, 

Several biographies of Tommy Cooper are availavle online: 

Tommy Cooper (Place 34 in the list of "100 Welsh Heroes")
<http://www.100arwyrcymru.com/en/biography/tommycooper> 

British Film Institute
<http://www.screenonline.org.uk/people/id/839963/> 

There are also some lists of stage works: 

BBC list fo stage works
<http://www.bbc.co.uk/comedy/guide/talent/c/cooper_tommy.shtml> 

British Film Institute
<http://www.screenonline.org.uk/people/id/839963/credits.html> 

As for his tricks, it seems that it is preferred that you'll buy
cassettes to viwe some of the tricks, as only few are online, and not
in a comprehensive site. I did find the "Multiplying Bottles" trick,
with description, as one of the "Fifty Greatest Magic Tricks"
<http://www.magicweek.co.uk/magic_reviews/review_show_fifty_greatest_magic_tricks.htm>

You could see this trick, and buy its equipment on The Magic Box: 
<http://www.magicbox.uk.com/product.php/005/00184/> 

I hope this answered your question. Please contact me if you need any
clarification on this answer before you rate it.

These biographies aren't even accurate. Where can I find a whole site
devoted to Tommy which lists his birth date at 19th March 1921. I
don't mean just one page I could have found those myself|!!!!!!!!!!!!

This Biography Channel article contains some biographical information
on Tommy Cooper:
http://www.thebiographychannel.co.uk/biography/tommy_cooper.html

Scriptor

Another site with the wrong birth date

That's a rather rude response to someone that gave you what you asked
for and more for $1.50 (the researcher only gets 75% of the fee).

Your question did not ask for a website that shows a birthdate of 19th
March 1921.  How would the researcher know that all of the bio's on
the web are wrong?

I've managed to find a website by myself. This one covers everything
about Tommy Cooper http://justlikethat.homestead.com/Index.html