What is the last Motown song to be No 1 in the UK?

The last Motown song to reach No. 1 in the UK was "Reach Out I'll Be There" by The Four Tops, which topped the charts in 1976. After this, Motown's influence continued, but the label's singles began to chart less frequently at the top position. The iconic sound of Motown still resonates in music today, but the label's peak popularity in the UK largely occurred in the 1960s and 1970s.