More on Brook Foss Westcott
1). While an undergraduate at Cambridge he was a founder member of a club called ‘Hermes.’
2). While a graduate student at the same University, he was a founder member of an institution called ‘The Ghostlie Guild.’
3). A man called W.W. Westcott, who founded the Hermetic Order of the Golden Dawn, might be an alternative identity of B.F. Westcott.
Source: http://strictandparticular.blogspot.ca/2009/10/was-brooke-foss-westcott-occultist.html
Others accuse him of being a Mason and a member of Helena Blavatsky's Theosophical Society.