Who is the band in series 1 episode 2 of Doc Martin?

I’m trying to find out too. It was a popular song that I heard on radio a while ago maybe 10 years or so. The band played I think in the episode about the giant squirrel and the Port Wenn dance night. I’m pretty sure it’s a well known song and band but people have said they are session musicians. If someone knows can they let us know.