For many years it was believed that the the entire series had been lost, even by its creator, Roberta Leigh. In 1997, after Leigh was approached by a video company about a possible DVD release, it discovered that she had kept a complete set of 16mm prints which she had stored away in a lockup decades earlier and forgotten.
Many shots of Space Patrol headquarters include a model of London's Post Office Tower (now called the BT Tower), which was under construction at the time the series was being made.
Often mistaken for a Gerry Anderson Supermarionation production. In particular, some fans get confuse this series and Fireball XL5 (1962).
Series creator Roberta Leigh had worked with Gerry Anderson several years prior to this show so the fact that some people thought they (incorrectly) remembered this series as being a Gerry Anderson production is perhaps understandable considering the connection.