I'm not going to dispute anyone's word on this, and especially not Peter Greens, but my own impression at the time was that Peter Jones was a kind of unofficial 4th member, much like REM's current lineup. I'm sure I recall a comment in interview at the time that Ch were officially a three-piece but I've long since binned the magaizines from that time period so I can't substantiate that recollection. Certainly PJ wasn't included in any of the promo shots taken around the time of Recurring Dream and he wasn't listed as a full band member in that album's credits.