The Love Buttons, an english band from the late 80's. Their only and fantastic EP was published by Ambition records in 1990.
They also had some songs in split flexis and cassette compilations, but their best are the 3 songs from the 12" without a doubt.
The members of the band were: Hugh Sunfish (guitar, voice), Pete (drums), Jo (guitar, voice) and Richard (bass).

This "Jon, you bastard" sounds a lot like "Dejame" a beautiful song by a spanish band called Los Secretos, but it's wonderful anyway.

You can download it from
here