My favourite Finzi CD (alongside the Wilfrid Brown version of Dies Natalis:
http://www.amazon.co.uk/Finzi-Orchestral-London-Philharmonic-Orchestra/dp/B000N8UVR6/ref=sr_1_5/202-9347871-3364610?ie=UTF8&s=music&qid=1193225933&sr=1-5
This is wonderful timing! Just before I read your post I was over at Amazon looking at that very page.
Yes - he [Finzi] claimed not to like it at all, which is why it shows up so rarely in his output, despite composing many vocal works.
Guido, I don't doubt what you say at all, but not only did he include the organ in several of his choral works, the parts aren't just a bit of pedal and a soft chordal reinforcement of vocal parts. The organ parts are detailed, imaginative and often call attention to the instrument in a way that can hardly be called accidental. If he disliked the organ, he found a strange way to show it.
Works with organ:
My lovely one, Op. 27, No. 1
God is gone up, Op. 27, No. 2
Welcome sweet and sacred feast, Op. 27, No. 3
Lo, the Full, Final Sacrifice, Op. 26
Let us now praise famous men, Op. 35
Magnificat, Op. 36
This may be all of them, but it's not a negligible fraction of Finzi's choral output. And several of them are among his greatest and in fact most popular works. He would have been a very significant composer for organ had he overcome whatever objections he may have had. That's just an opinion, of course, but listening to the works listed above gives me that impression. Incidentally, all of these works are included in this CD discussed elsewhere in this thread.