long-serving?

In the comments, Ian posted this question

with Clement's passing, who's the 'oldest' player who still appears? (Not old as in age, but old as in first appearance.) Paul is probably old guard now (1988?) but how about Tim Rice, etc.? Who's now the longest serving who still appears?

Here's a list of people who appeared either last year or this year in chronological order... (note: where the panellist appeared on TV first I have noted both that and their radio debut)

1967: Sheila Hancock
1980: Tim Rice
1982: Gyles Brandreth
1989: Paul Merton
1992: Stephen Fry, Helen Lederer, Tony Hawks
1994: Jenny Eclair, Kit Hesketh-Harvey (TV), Graham Norton (TV), Kit Hesketh-Harvey (radio)
1996: Graham Norton (radio)
1997: Julian Clary
1999: Pam Ayres (TV)
2000: Sue Perkins
2001: Liza Tarbuck, Charles Collingwood
2002: Chris Neill
2003: Pam Ayres (radio)
2006: Pauline McLynn, Janey Godley
2007: Dave Gorman
2008: Josie Lawrence, Jack Dee, Shappi Khorsandi, Mike McShane
2009: Josie Long, Justin Moorhouse, David Mitchell, Paul Sinha, Richard Herring, Suki Webster

I reckon a panel of Paul, Tim, Sheila and Gyles would be good fun!