I think the Brotherhood Of Man were (or is that "are"? no doubt they're touring the caravan parks this summer) one of those groups who went through various different line-ups/ permutations over the years. An early incarnation made this Bubblegum Soul favourite.

...that today is Word's Brotherhood of Man day.

Surely a dead cert for the next cover illustration (bouncing on a trampoline with Lou Reed and Paul Weller)