Bush with white flowers and yellor centres

This is another beautiful flower in my opinion can you give me a name please thank you :-?

 

What a beautiful clematis. You are lucky! Here is a link to some white varieties http://www.donahuesclematis.com/white.html or someone here might be able to tell which type it is.

 

Thank you Jewell appreciated

 

I have never seen one so full!! That must be the grand-daddy of all