The other three original members (Lynda, Eddie and Colin) are all still around (as is John) but none of them is actively performing these days.

There have been various personnel changes over the years and the latest line-up (to the best of my knowledge) included Andrea Mullins, John Eatock, and Alan Taylor. Ex-Houghton Weaver Norman Prince has been an occasional member, and in between there were various others including Bernard Wrigley. The band does very few gigs these days and I don't even know if they still exist as a band nowadays.

Try here: Fivepenny Piece website - you will find some more info there, about past members.