From a href="http://whirligigtv.yuku.com/reply/7930/t/Frazer-Hayes-Four.html#.T00HHPXX-Dc">this site

Fraser Hayes Quartet were formed in the late Forties, disbanded in 53 and reformed in 56. Jimmy Fraser Potts, Tony Hayes, Dave Mason and singer June Ellis were the original members according to 'The Ballad Years' by Don Wicks.
Annabelle Lee replaced June Ellis and married Jimmy Fraser. Dave Mason left the group and was replaced by Nick Welsh. Later they had new vocalist Lynda Russell who herself was replaced by Kerri Sims. Annabelle Lee later rejoined the group, she replaced Barbara Moore who had taken over from Kerri Sims.
They appear to have stayed with Round The Horne into the middle sixties. Jimmy Fraser emigrated to the States to enjoy Florida's sun.

That should give you a few names to google.