This situation existed in the eighties when cargo aircraft, Air Bridge Carriers, Channel Express and others used to park on the hangar line. Whenever Monarch and Britannia used to want to get in/out hangars it was like musical chairs with aircraft. Used to cause a few arguments if on/offloads going on at the time.
So much for having a new cargo apron built, this stupid situation has made a return and nothing learnt after nearly 30 years !!!