Thanks Goonergirl. I've got the venue for the CP sorted in London. Its just the honeymoon I'm after booking now.
What I've discovered is that its far easier to book accomodation abroad, and cheaper, than here in the UK! Some B&B are charging £80 per person per night! That includes breakfast and dinner, but at one of them you have to book for everynight, so no chance to take dinner outside the hotel. Alternativley you can do just breakfast at £65 pppn, but that is still so much dearer than going o.s.
Barkers has closed down. An email link on one of the gaysites got through to the ex owners who were kind enough to let me know. There is the Ryn Anneth in St Ives, but no website. Has anyone been there?