The majority of the initial run of The Comedians (the first 52 episodes from 1971-1974) carried only minimal credits for the technical crew.
The first series featured only the designer, director and producer - series 2-6 stripped this down even further by not crediting a designer.
The occasional special, such as Music Hall (1973), carried a few more technical credits, but in general the listings for these episodes are accurate to what was shown on screen, despite containing only two names behind the production.