If you sit for your modules in different 147 organizations your modules certificate would still be valid however you'll be required to submit a logbook equivalent to 5 years experience rather than 2.
It doesn't mention anything in the ukcaa site but it happened to several of my colleages who sat their modules in a mixture of 147 organizations and the answer from the CAA was that their training was no longer deemed 147 and has changed to 145 which necesitates 5 years experience for the grant of the license.
Last edited by flame_bringer; 2nd Feb 2014 at 15:19.