David Jason liked launching rockets while making the show; sometimes to great acclaim, sometimes not. He liked to build ships and planes which than developed into rockets and than launchable rockets between two and five feet tall, with an engine and an explosive component that could fly between 500 and 900ft in the air; Jason liked the rockets best because you could get a performance out of them. Jason assembled them with tools packed in an old makeup case and from specialist parts from obscure sources across Yorkshire. Jason launched them for cast and crew at the back of Leeds Hospital for three years when they filmed in the mortuary. Jason later built a launch pad from an old lighting stand and added a launcher with a key, lights and a 2-tone alarm. They were the dampest thing you had ever seen. The masterpiece was a Saturn V replica with one of the biggest engines so it was a complex build. It launched like the real thing by hovering above the pad and set off into the sky. Jason liked launching that one most, especially when they came back, which was never a sure thing, with a parachute that emerged from the nose cone. After constant use, it failed to launch at all, and was reluctantly retired.