Pedzisa mutsara unotevera: Jonathan Martin, mutungamiri weBBC Sport, akachengetedza mabasa aWalker nokuda kwekugoverwa kwekambani yeBTCC mushure mekunge chibvumirano chekupedzisira chekupedzisira chapera navo muna May 1997. Walker akasarudza kusavandudza chibvumirano chake neBBC muna 1998 kuti afunge nezvekutepfenyura kweITV paFormula One uye aisada kuenda kakawanda kuLondon kunyorera tsananguro yeBTCC. Paiva neGrand Prix shoma pakati pa1978 na1996 iyo Walker asina kutaura pamusoro payo paaishandiswa neBBC, kazhinji semugumisiro wekutaura kwake kune imwe nzvimbo. Zvimwe zvacho zvaisanganisira 1979 Belgian Grand Prix uye 1988 Hungarian Grand Prix (apo Simon Taylor akamutsiva), iyo German Grands Prix ya1981 na1984 (ese ari maviri akatsanangurwa naBarrie Gill), uye iyo
1985 German Grand Prix (Tony Jardine).