Fairport Convention - One Sure Thing

There's a local band up here who've just released a cover version (with Judy Dyble singing for them) of One Sure Thing, and I can't for the life of me work out how to play it on the guitar and ukulele.

I've emailed one of teh band, as I see him sometimes, but here's the link to their website which has some previews of their songs, and the one in particular

http://www.theconspirators.co.uk/music-video.htm

It's bloody catchy, but I cannae figure it out, so any help appreciated. I've exhausted Google searching for it.