Yeah, Helpless wasn't a single in the UK
Without checking I'm thinking that A Good Idea was the second UK single.
Score one for the memory, just checked and it was. A bit odd to hold back IICCYM until third as it's arguably the song with the widest appeal.
Also remember that the initial Changes release was pretty low key but that things took off when they got prominent features in the UK press shortly afterwards.
Fairly sure I was reading the Melody Maker piece at the time waiting for my now wife to turn up the night I proposed!
Mike