The complete version of this episode only exists in the BBC archives on a domestic video format.
The somewhat esoteric script of Doran's Box was allegedly not understood by its producer. In writing an obituary in The Times for David Rose, journalist Simon Farquhar stated:
"[...] he knew a keen as mustard young director like Matthew Robinson was just the person to hand a script like Eric Coltart's Doran's Box (1976) to. "I don't understand it, it's about a man who shoots at aeroplanes", Rose said. Whatever was inside that puzzle box remained a mystery for the small number of head-scratchers who watched the finished piece, but we had fun trying to find out."
"[...] he knew a keen as mustard young director like Matthew Robinson was just the person to hand a script like Eric Coltart's Doran's Box (1976) to. "I don't understand it, it's about a man who shoots at aeroplanes", Rose said. Whatever was inside that puzzle box remained a mystery for the small number of head-scratchers who watched the finished piece, but we had fun trying to find out."