A fairly concise explanation of Bombardier's current situation he

"BRITAIN'S only remaining train builder, Bombardier Transportation, has been
forced to lay off 77 workers at its Derby factory - despite having a full
order book - because some of its suppliers have had credit facilities
withdrawn by their banks.

In one of the strangest examples so far of the perverse effects of the
credit crunch Bombardier, which has had all its production lines working at
full capacity, said banks have put such a squeeze on credit that supplier
firms are finding it impossible to borrow to pay for extra equipment and
employees to meet Bombardier's growing demand for components."

More at:

http://www.railnews.co.uk/news/general/2009/01/20-bombardier-layoff-workers.html

Paul S