NATS (the UK) are members of Eurocontrol. Just like Germany, Italy and Slovakia.
I think its Maastricht, Shannon and CEATS that are/will be operated by Eurocontrol. However, the CANSO group has recently announced that Eurocontrol should change its role. I think they want it to be more of a regulator.
If that is the case then the three ACC's above will be up for grabs and base cases for SES initiatives. Maybe that fits in with the recent rumours concerning Maastricht privatisation.