if you call the career development loan helpline. i had to call them the other day to get my one. i cant find the number im afraid, but i just rang barclays and they gave me the number to ring. its just an automated answer phone thing, but they called me back the next morning.
If you go to the website of the university that you require the number for, and type in career development loan in the search, it should come up with an information page about cdl and also have the learning provider registration number listed on there (hopefully). thats how i found mine- not sure if all universities will be the same.