Which Clematis is this?

caroletree

Hi all,

I inherited an extremely overgrown Clematis when I moved here last year.  I cut it down to about 18 inches and it grew vigorously and flowered very well through the summer, it has a couple of small buds on it now, but the leaves are going brown.

I'd like to know what I should do pruning wise for next year, but I can't seem to find out which type it is.

Many thanks 

C.