I've done some research and think it's called Kissing Time by Blur but there is another version called Kissing Time by Marianne Faithful too. But hope that helps a bit!
The song is called Kissing Time and it was written by Marianne Faithful and Blur. Marianne recorded the song and released it on her album Kissing Time. Blur (well Damon Albarn at the very least) provide the backing on the track. Can't trace a seperate Blur only version. Hope that helps.