Law & Order: UK welcomes new cast members Peter Davison and Dominic Rowan as filming begins on 13 more episodes.
The pair will join cast regulars Bradley Walsh, Jamie Bamber and Freema Agyeman for series four of the courtroom drama.
Peter Davison will play down-to-earth Henry Sharpe who takes over the job of Director of the CPS – previously held by George Castle (Bill Paterson).
Dominic Rowan will play Senior Crown Prosecutor Jacob Thorne, a working class hero who helps the team in their fight for justice.
Bill Paterson is set to return in future series as the newly appointed Director of Public Prosecutions.
Other guest stars lining up for series four include Juliet Stevenson, Tobias Menzies, Eddie Marsasn and Nicola Walker.
Law & Order: UK creator and executive producer Dick Wolf said: “Following the Law & Order tradition of seeing casting and recasting of roles as an opportunity rather than a burden, we welcome two great new actors to the Law & Order family.
“Peter and Dominic are well known and well respected members of the British acting communuity.”
Executive producer Adrew Woodhead said: “In these new episodes audiences will get to know our heroes even more and grow to love our new cast members. We promise some great suprises along the way…”