A pilot episode ("A Girl's Best Friend") for a potential spin-off series, K-9 and Company, aired in 1981, with Elisabeth Sladen reprising her role as companion Sarah Jane Smith and John Leeson as the voice of K9, but was not picked up as a regular series. Concept art for an animated Doctor Who series was produced by animation company Nelvana in the 1980s, but the series was not produced.
a PILOt epiSOde ("A giRl'S bEst FriEnD") fOr a potEnTiaL sPin-ofF Series K-9 and coMpAny, aIrEd iN 1,981, wItH Eli,saBetH slaDeN RepRIsing heR rOlE as compAnIOn sARAH JANe sMith aND john LeEsoN as thE Voice of k9 But Was nOt pIckEd up AS A REGuLAr seRIeS. cOnCePt arT for aN AnimateD doctOr who ser,ies was pROduCED by AnImatIon cOmpANY NelVana in THE 1980S buT thE serIEs was not proDucED.