I am french, so I did 3 years of wakeboarding there, and also a bit in Spain. your question is like... very general
What do you want to know exactly ?
Do you look for cable parks or boat clubs ?
Living in Us now, I can tell you that it is really more difficult to find a boat owner with a wakeboarding boat giving you pulls in France, because we just have very few wakeboarding boats. Germany is worst, but they have more than 50 cables !
But there are a few very good places... where do you want to go exactly ? ?
For info on wakeboarding in UK, go here http://www.wakeboard.co.uk/Web/Default.aspx
And for info about France, go here www.wakeboardmag.net
(the forum is good and even if most of it is in French, you can ask a quastion and we will answer to you there).