There's a lot of material on the Internet about the Professionals and the New Professionals.
Photos, bios, episodes, stories, etc etc. Here are a few sites, well worth the visit.

The authorised CI5 Professionals Page by Dave Matthews

This excellent site has information about CI5: the Professionals
starring Lewis Collins, Martin Shaw and Gordon Jackson

CI5 Operational Control by Alyse and Tasha

This extensive site contains much information about
CI5: the New Professionals
starring Colin Wells, Kal Weber, Edward Woodward and Lexa Doig.
There's a huge amount of fan fiction to be enjoyed here.

www.ci5-files.de by Renate

This site, in both German and English, contains information about both the original and the new show.
Renate works on her site often and it's improving every time.

CeeJay's picture gallery

for lots of pictures of CI5: the Professionals.
Thank you CeeJay for allowing me to use some of your pics!

Would you like to have your site mentioned? Please mail me.