Some of you are taking an interest in the benefits of copyrighting work

Tony has been good enough to pass on an addi of an organisation he knows

http://creativecommons.org

and I found these on Google

https://www.copyrightservice.co.uk/copyright/

http://uk.wow.com/search?s_pt=aolsem&s_it=aolsem&s_chn=35&q=copyright%20information

Beware of companies only looking to take your money for a non guaranteed service. 

Personally, if someone on the internet were to plagiarise your work,

you'd have to become aware of it first and then prove by date of first publication by you.

If you read these articles on copyrighting, at least you will be better informed.