To make Handfasting legal in the UK

Why is Handfasting still not recognized in today's laws? could it be that Christianity is still deemed "The Norm"? There are more and more people turning to Paganism these days and yet the laws have not caught up.
I have started this cause because there has been a number of people joining the group on Facebook.

1. http://www.spiderproductions.org.uk/?p=924

2. http://en.wikipedia.org/wiki/Handfasting