Gingerbread - No reason at all that we should have met, I've never been near Western Air, or Sunrise for that matter. I just read Standards Doc 31 from time to time.
B2N2 - Western Air hold the approval and have an agreement with Sunrise whereby the latter provides the weather, aeroplanes, instructors and other facilities. The sub-contractor will often market courses as though they held the approval themselves, which is misleading although, to be fair, this does not currently appear to be the case with Sunrise. However, have a look at the MFC website - beyond stating that they offer courses "in association" with Cabair, the clear impression is that they are approved by the UK CAA in their own right - this is untrue, it is Cabair alone that holds the approval. MFC may carry out only such JAA training as Cabair allow them to, and may use only the course profiles that Cabair have designed and have been approved to provide. The relationship between Western Air and Sunrise is precisely the same.
The danger here is that the real approval holder can suddenly decide to terminate the arrangement, as AFT did with Delta Connection, leaving a number of students unable to complete the courses for which they had paid.