They are not related to HeavyLift Oz at all (who own the Belfast).
The DC8's are owned by Farhad Azima who was also the money man with the original HeavyLift Cargo Airlines at STN in the 80's/90's and early 00's.
He was very evident in 01/02 trying to keep HLA afloat; but to no avail.
The A300B4's pulled HLA down despite the heroic efforts of the crews to operate within CAA limits and make a profit. We just couldn't compete with other JAR operators from other EU countries who operated with different goalposts.