I think what will happen is that we will see chunks of the operation go to Stagecoach and Uno Bus with the remains being hoovered up by smaller operators, I might be wrong but I fear its a matter of time now before the axe falls and takes the memories of Northampton Transport with it...
Well, given First are trying to sell it, seemingly without much success and Stagecoach, much as they'd like to take it over, will be precluded from doing so by the competition authorities, I think an orderly close down is most likely.
No surprise that nobody wants it - First have neglected it completely for the last 8 or so years by giving up services to some areas of the town and running a progressively older fleet when Stagecoach were clearly investing in the future.
In terms of who'll pick up what:
Stagecoach will look to register some routes - though I don't know what spare capacity they have in terms of either drivers or vehicles.
Uno may look to expand, but it is early days with their operations in Northampton and currently the routes they operate are established routes with a close tie to the University - they aren't operating anything which is truly 'commercial' in that sense.
Centrebus may look to do some more work in Northampton - they've started to establish themselves in Corby / Kettering - Northampton would be a logical progression.
Meridian bus - maybe some more, but they're a small player.
The one that hasn't been mentioned by anyone is Arriva - who may take another look at running stuff in Northampton. They did have some NCC work at one point - and running into Northampton from MK isn't beyond the realms of possibility.