I agree, though Crowley's remarks are worth reading (about Champney's school) as they are one of the few insights into 'social life' of Brethren that you can find. It probably would not be advisable for me to post them here, though his autobiography can be found on the online in many places. The relevant pargraph starts,
The Revd. H. d'Arcy Champney, M.A. Of Corpus Christi College, Cambridge, had come out of sect. He had voted at the parliamentary elections by crossing out the names of the candidates and writing, "I vote for King Jesus." He had started a school for the sons of Brethren at 51 Bateman Street, Cambridge
I believe Mr Champney was my father's cousin. I don't know anything more about him but did know one of his daughters, Phoebe, a little - I assume she was Peter's aunt. If he would like to be put in touch with me, I would be happy for that.