"Bad Old Days" was the British entry in the Eurovision Song Contest 1978, performed in English by Co-Co.

[1] On the night of the final, 22 April, the song was performed eighth, following Spain's José Vélez with "Bailemos un vals" and preceding Switzerland's Carole Vinci with "Vivre".

[2] At the time, this was the worst showing yet for the UK in Eurovision, lower than the 9th place in 1966 which until 1978 had held the dubious distinction.

"Bad Old Days" was succeeded as British representative at the 1979 contest by Black Lace with "Mary Ann".

The song entered the UK Singles Chart at no.39 for the week the contest was staged.