In the early years of the service a large percentage of the drama programming on offer were imported from Australia. As the service started to see more success, and additional funding became available, Springbok Radio began to produce the majority of its programmes - almost ninety per cent - within South Africa and a number of independent production houses appeared on the scene. 

Alas, Springbok Radio's days were already numbered. The introduction of television in South Africa in 1976 - which started to show advertisements in 1978 - provided stiff competition for the radio station who relied heavily on revenues from advertising.

Springbok Radio went off air at the end of 1985, but luckily there are many classic shows, one of which was Castle Playhouse. Alas, very little information is available about this drama series.

The influence of the BBC is quite evident in the production values of Castle Playhouse, which is unsurprising considering the popularity of the BBC World Service in the African continent.