Not many Muslims in Wales? What nonsense... not as many as the east mids or bits of London and the North perhaps, but walk around Prestatyn on a sunny day and for a moment you could think you were on the banks of the indus!
Certain parts of Wales were areas of that pretty poor town planning thing where they decided to group loads of a chosen minority in single areas... hence, lots of Muslims in certain towns in Wales. In fact, I think the GIS data is freely available to overlay on a map. That way you can target your demographic by overlaying census race/ religion data on top of Google earth maps. Does that make sense?
We used to rent land in leics, so can picture the whole halal customer Base thing... it's a big big deal there. I seem to remember our neighbour did a lot of work delivering sheep to a mega abattoir in Luton for eid.
I suppose as long as you've worked your logistic network out, it shouldn't be impossible... mid Wales is a long way from everywhere else though.
I like the idea that you could be just the 2nd organic halal producer in the country... that sounds like a good business idea... potentially.