Regardless of the outcome in the UK, the research will continue somewhere, and the treatments will be developed.
In all likelihood the Catholic church will continue protesting about the research and won't protest in the slightest about it's followers using the medication. They could do with a simple labelling system to help them remember. I've come across this petition for just that on the 10 Downing St web site here: http://petitions.pm.gov.uk/StemCellLabels/.
We the undersigned petition the Prime Minister to create a law that will require all treatments invented using knowledge gained from stem cell research to be labelled "unsuitable for Catholics".
Few petitions have such a low likelihood of succeeding, although that's not really the point of posting it. Why not sign up?