brian,
I have had the benefit of viewing the results for the LBA-LHR and it is safe to say that it is making good money, so don't worry..
The ERJs sit around at Leeds because the sums have been done and it is much more sensible to have them wait for their core flights (which with one possible exception are doing very well financially) than operate less profitable (and historically unprofitable) fillers, which expose the core operation to risk if things go tech.
Staff have been told that the last year has been the most profitable ever for bmi regional.
Thanks for your concern.