Original: The CAA no longer provides air traffic control services (ATC), this respsonsibilty was passed to a private company called National Air Traffic Services (NATS) in 2001 (government owns 49% of this).
Simplified: The CAA no longer provides air traffic control services (ATC), this responsibility was passed to a private company called National Air Traffic Services (NATS) in 2001 which the government owns 49% of.