I don't work in the CAA (I wish I did...
go and rattle some cages)
You are caught between a rock and a hard place. I gather you've spoken to your company about where you stand?
Is it possible for you to fly over to the original country and get your JAR ATPL issued there? That looks like your best bet. Doing the 14 exams will take a couple of months...
Have you gone and seen the CAA in Gatwick?
Phoning them is next to useless unless you can get someone on the "inside" on your side and you phone them direct.
Have you emailed them? Sometimes that helps.
Other than that I cannot think of a way around it.