While travelling with Sarah Jane Smith, the Third Doctor used a simpler design of the control room he'd used in his final travels with Jo Grant. As with that one, there was a more visible separation between the roundels and the wall behind them than most control rooms. Unlike the previous design, the only features of this room beyond the walls were the furniture which the Doctor had added to it. (TV: The Three Doctors)
The Fourth Doctor continued to use this console room, adding a wall featuring the shallow, non-backlit roundels first seen during his encounter with Kronos at some point during his travels with Sarah Jane Smith. (TV: Planet of Evil, Pyramids of Mars)