I've got one of those too! Still don't know who it is, pretty crap as well. I have got a pukka w/d of "Good Guy" the run-out is identical from memory, the only way to tell is to play it.
The day Otis Busch went on, I bought a copy off Anglo-American, mint, labels correct way round for £25 go figure? There was also a Cha-Cha copy on for £40, though when i went back later it had gone.
The 1961 HMV release is first, it has the United Artists logo on the label, as it was part of a "United Artists" series, before EMI started it's UA imprint which began in August 1962.
The 2nd UK release was on Sue in 1966.