Beta 5 was an unhabituated planet in the Ark Rough Bennett Complex. Although the planet was uninhabited, the atmosphere was breathable and some surface vegetation was visible.
It was the site of Keiller's rendezvous with Servalan.
Scorpio landed on Beta 5, and Avon, Tarrant, Dayna and Soolin remained on the surface, where they met Servalan and four guards. After the gold from the Space Princess and money were exchanged, they teleported without Keiller, abandoning him to Servalan. Shortly after, Keiller's dead body was left on the planet. (TV: Gold)