2000
Linda Lusardi played Don Beech’s girlfriend in 9 episodes, Love or Money, Fake Fur, Find the Lady, Fifty-fifty, The River, All Fall Down Part 1, All Fall Down Part 2, 210: Rookies and Professionals and 216: Nemesis.
Samantha Bond played Mary McMahon QC in ‘Over the Edge’ and also the same character in ‘Deadly Impact’ (1998) and ‘Big Day’ (1998).
2001
Ralf Little was in 3 episodes: Night Games, Aftershock and Judas Kiss.
2002
Beverley Callard played Chrissie Hendry in 014 Walking On Water
Roger Lloyd Pack played drugs barren Mick Mortimer in 6 episodes: 039: Certain Uncertainties; 040 Jeopardy; 041 Gone Native; 042 Requiem; 043 Quick Off The Mark; 044 Access Denied. He also starred in the 1991 episode The Negotiator.
Liz Smith played Harriet ‘Tatsie’ Wright in 2 episodes: 040 Jeopardy and 041 Gone Native. She also appeared in The Drugs Raid (1984), Dead Man’s Roots (1991) and Sucking Eggs (1998).
Nicola Stapelton played Tina Pope in episodes 033 Loggerheads, 034 Protection and 035 Imposters. She also appeared in the following episodes: Double or Quits (1991), The Bus Drivers Prayer (1998), 460: A Stiff Upper Lip and Who Dares Wins (2010).
David Walliams in 034: Protection.
2003
Stefan Dennis played a ring leader in a gang of shoplifters in 112: Laid To Rest.
Burt Kwouk played Father Kwong in 101: Out Of Your Depth and 102: Juggernaut. He also appeared in episode 372: Cop The Lot (2005).
Anna Wing played Alice Clarke in 087: Without A Trace. In 2007 she appeared in the episode: A Life Of Lies.
2004
Lynda Bellingham played Irene Radford in 19 episodes, running from episode 223: Insensitivity to episode 273: Return of the Gang Queen.
Lenora Crinchlow played Shirley Moss in 12 episodes, running from 219: The Tunnel – Part 1 to 271: One Rule For One.
Peter O’Brien played DI Peter Cavanaugh.
2005
Georia Moffett played DI Sam Nixon’s daughter, Abi Nixon, also returned for Sams final episode.
Pauline Quirke played killer Lesley Palmer.
2006
Les Dennis played Tom Walker.
Andrew Sachs played David Leyton.
Mollie Sugden.
2007
Darren Day played photographer.
2008
Joe Absolom
Edward Woodward played Johnnie Jackson in two episodes ‘Sins of the Father Parts 1 & 2.