I have been asked to reply.
The Government are aware of concerns about the ability of the Belfast airports to operate private police forces and this was discussed with the Northern Ireland Office during the drafting of the new provisions.
I can confirm that we will use powers in the Policing and Crime Act 2009 to ensure that the current policing arrangements can be maintained at both airports. Officials from the Department for Transport will work closely with the airports concerned and the Northern Ireland Office in this matter.