From Fywhoosh website:
White Eagle Aviation S.A. have stopped delivering their services between Dundee / Belfast and Dundee / Birmingham.
Any claims for refunds or compensation for tickets for travel up to and including Dec 21st should be addressed to White Eagle Aviation at their head office in Warsaw, address below.
However, in order to honour as many ticket sales as possible, we are in advanced discussion with a new flight provider to fly these routes from Monday Dec 17th 2007.
Specific confirmation of these developments will be posted on this website by Thursday Dec 13th with details of the carrier. Untill this confirmation is specific we will be unable to take any further bookings.