Found reference to a leaflet about Crowley's speech at Foyle's Literary Luncheon, but have not found a copy of the leaflet to see if Ernest is listed as the presenter of the Hymn to Pan. If he was, that had to be one socko and rather uncomfortable luncheon.
"Foyle's Literary Luncheon. 23rd Luncheon, Thurday, Sept. 15th 1932. Mr Aleister Crowley will speak on `The Philosophy of Magick', London, 1932. 4-page leaflet" Catalogues of the Golden Dawn, Warburg Institute
Here's Crowley's speech: http://hermetic.com/eidolons/A_Lecture_on_the_Philosophy_of_Magick
It makes me wonder just how involved in the occult Ernest was. He was certainly an occultist to some degree. Nothing should be surprising to us at this point.