I got fertilised Jersey Giant eggs off ebay earlier this year.
6 from each corner of the UK (Scotland, Cornwall & Wales) fair enough only 6 hatched but we have now got 4 hens and 2 cockerel's from different strains (unbelievably 2 hens and a cockerel from Scotland and same from Cornwall (Wales didn't do too good on the journey here I think !!)
They haven't started laying yet but I am looking forward to hatching some of my own this coming year. We are going to put alternative cockerel's with the hens (luckily we marked the eggs on delivery and tagged the chicks on hatching)
This may be a good way for you to get these, via ebay or another source. Alternatively mine should be laying around April but it is a long drive LOL
Good luck with finding some - they are lovely birds