You might also be interested in this re COMRES, taken from this weeks’ leading article in the Catholic Herald.

See also:

http://c4m.org.uk/2012/11/latest-poll-tories-lose-yet-more-ground-over-redefining-marriage/

and:

http://c4m.org.uk/downloads/10reasons-print.pdf (reason 8)

for further evidence on this go to the COMRES website and put marriage in the search engine.