Danish Dude, I appreciate your efforts, but I don't believe there is a legitimate dispute. Advent is only the contracted CDMO.
The Sawston facility is GMP licensed by the MHRA. Advent does not own any of the equipment, clean rooms, or Flaskworks devices. If Advent were to move, they would have to get NWBio's approval to take any of the Sawston assets.
Advent is "holding" the license because they are contracted by NWBio to operate and manage the Sawston facility as the CDMO.