This was the first time a drama production had been allowed to be filmed inside Heathrow Airport.
This is considered by fans to be the worst story of Peter Davison's run, an opinion shared by the actor himself. He claimed it was a "very good story, but we had run out of money. We filmed the prehistoric landscape of Heathrow airport in Studio 8 [at TV Centre] with a model Concorde in the back of the studio. The monsters were bits of foam. We didn't do the story justice."
Some of the character names had to be changed because there were people working for British Airways with those surnames.
The first time a drama production had been allowed to film on board an actual Concorde.