It is EU policy to have less control centres in Europe and so reduce costs to the airlines. This is music to the ears of the Airline group who are very focused on costs (and profits).
In its current configuration ScATCC couldn't handle Swanwick's workload and visa versa so there is no point in having the two centres.
People from ScATCC say Richard Deakin has told them they won't be moved before 2020. With the current project workload I doubt they could get Swanwick ready to take on ScATCC's work before then.
I'd be very surprised if senior NATS management and members of the board had not discussed closing ScATCC and I wouldn't be surprised if they had done a study of exactly what was required to move ScATCC's work to Swanwick.
If NATS do want to close ScATCC then I think they will say so before the next election because should we get a Labour government in 2015 I can't see them letting NATS close ScATCC.