Hi,
Apologies - this is slightly off-topic, but hopefully of interest
(Skipness - thanks for remembering!).
Here is a chart of the London - Glasgow market since 2001 (from CAA data). It proves nor disproves the claim about bmi and LHR-GLA, but it does show the extent to which passenger numbers have fallen - they are now at the lowest level since 2001.
I have highlighted the peak years on each route. LCY-GLA is the only route currently at its peak. The figures also suggest that Ryanair have been hit hardest on their STN-PIK route.
Passenger numbers on LHR-GLA are down by about a third since 2004. We don't have the full 2010 figures yet, but they were down even further in the first part of the year, before showing modest increases for the last couple of months.
Never say never... especially where bmi are concerned!
