Top of the Pops 1979 Episode 31 2nd August 1979 ( Air Date 1979-08-02 ) Genre Reality category. Overview "Weekly pop chart programme presented by Peter Powell, with performances from Sham 69, Olympic Runners, ABBA, the Korgis, BA Robertson, Sparks, the Specials, the Boomtown Rats and the Gibson Brothers and a dance sequence by Legs & Co.".