The Captain Britain Corps spans the multiverse; the exact number of members is unclear. Many members are simply named Captain Britain, while some others use names such as Captain U.K. or Lady London or names reflective of the specific characteristics of their respective universes (such as Hauptmann Englande or The Violet Swan) or individual circumstances (such as Spider-UK). Of the corps members depicted in publication, most, but not all, have been alternate versions of Brian or Betsy Braddock.