Hi Guest, I would suggest you get in touch with your breed club:
NORTH OF IRELAND COCKER SPANIEL CLUB. Sec. Mr J McDowell. Tel No: 01960 367659
The Secretary should be able to put you in touch with those club members who have litters available or at least point you in the right direction when looking for a pup. Good luck and (without being biased!) excellent breed choice! :D
Hope that helps :)