From the book
One of Jim’s (Francis) first responsibilities for the fourth series was designing the rebels’ new ship, the Scorpio. Unlike the massive Liberator, its replacement was smaller, more austere, and capable of making planet-fall in various episodes. “We went through about a dozen designs, with a huge influence of hard-edged design work coming through from Star Wars. We had to make the ship aerodynamically capable of flying through the atmosphere, but at the same time, it needed a certain amount of shading and detail so we could use hard-edged lighting on it. I commissioned several different-sized models: a big one four to five feet long, a second, two feet, and a really small one. We had some success taking foreground miniatures out on location for Hitch-Hiker’s, so we tried it with the Scorpio and Blake’s 7, taking it out to some of the quarries, where the actors could run up to it. We used the big one for that, the middle-sized one for flying and docking sequences, and the really small one for distance shots.”
The Scorpio models were farmed out to a talented modelmaker named Ron Thornton, who would one day win an Emmy Award in America for his groundbreaking computer-generated spaceships in Babylon 5. “I was impressed with his designs and some of the models he made, so I told him we wanted three sizes built. In fact, it was two to start with, but when I phoned him up and said I also wanted a three-inch model, he threw it in for nothing. When he delivered the models, every one of them was perfectly in scale and proportion. He did everything I asked for, detailing those areas when I wanted detail, and the paintwork was superb.”
“It was a great day when Ron turned up in the workshop, because the base of the ship was being made by one of my guys, with the girder that it sits on and spins around. I spent two weeks looking at that and hoping the ship was going to be all right. I had great trust in Ron, and I’d been to see him at one stage when the model was just in Perspex, and he’d got all the shapes and facets I wanted. When he walked in with this huge model, we all gathered around and it looked fabulous. The original Liberator was this bloody great big lump we have to carry around, and I used to get stabbed with the prongs so many times. You could easily forget they were there, and take an eye out. Where the Liberator was weighty and needed to sit in one position, the Scorpio had been strengthened with built-in steel sections and fixing points, so we could suspend it from four different points without snapping it. Even though the Liberator had been so big, it didn’t have the detail or the sort of body that Scorpio had. I felt it was a lot more functional, which was our aim with all the spaceships, guns, and everything else on series four.”