Anyone remember Highland Express? Operated a solitary 747-100 (G-HIHO) which I believe ended up with Virgin
Operated STN-PIK-EWR and back. I travelled on them once, from STN. They offered the (then) cheapest fare London to Scotland which was a set £19. Such good value that the plane was full for the short leg to PIK.
The PIK-EWR leg was generally pretty empty.. They didn’t last long.
Sometime around ‘88-‘89 at a guess.