The official full-length trailer for Spooks: The Greater Good has been released, featuring the first look at some of the returning characters from the TV show.

Spooks stalwart Peter Firth, who appeared in every episode of BBC One’s long-running spy drama, is back as MI5 chief Harry Pearce, alongside Sherlock star Lara Pulver as Season 10’s Erin Watts, Tim McInnerny as Oliver Mace and Hugh Simon as Malcolm Wynn-Jones.

Newcomers to the Spooks world include Kit Harington (Game of Thrones), Tuppence Middleton (Sinbad), Elyes Gabel (World War Z), Eleanor Matsuura (Utopia), David Harewood (Homeland) and Jennifer Ehle (Pride and Prejudice).

Spooks: The Greater Good arrives in UK cinemas on 8 May 2015.

Watch the new trailer…

The official synopsis reads: “When charismatic terrorist Adam Qasim (Elyes Gabel) escapes from MI5 custody during a high profile handover, the legendary Harry Pearce (Peter Firth), Head of Counter-terrorism, is blamed. Disgraced and forced to resign, no-one’s surprised when Harry disappears one night off a bridge into the Thames…

“With MI5 on its knees in the wake of the Qasim debacle and facing controversial reform, former agent Will Holloway (Kit Harington) is brought back from Moscow to uncover the truth they feared – Harry’s still alive. He’s gone rogue, and needs Will’s help.

“As Qasim prepares his devastating attack on the heart of MI5 in London, Will must decide whether to turn Harry in – or risk everything by trusting the damaged, dangerous master spy who has already betrayed him once before…”

Are you looking forward to Spooks: The Greater Good? Let us know below…