Highly unlikely any of the 17000 will lose their jobs, unless the Gov want to close prisons, operating theatres, etc - so their jobs will TUPE over to whoever takes over responsibility.
Those much more likely to lose their jobs are the senior management and those in marketing and tresuary departments. Shame!
The company is a cash cow with lots of assets and guaranteed income,so once the pension issue is resolved (I.e. By the tax payer), then other companies will come knocking.