Gangs of London Season 3 Cast: New Actors & Irish Mobster

Few TV crime sagas have reshuffled their deck as ruthlessly as Gangs of London. After season 2 eliminated the Wallace heir, the show returns with a power vacuum, a matriarch tightening her grip, and new faces from the Irish mob.

Season 3 premiere date: 20 March 2026 on Sky Atlantic ·
Number of episodes: 8 ·
Returning series regulars: 10 ·
New cast members introduced: 6 ·
Show creators: Gareth Evans and Matt Flannery

Six key facts, one pattern: the Wallace empire has fractured, and the show is introducing fresh criminal elements to fill the void.

Who are the new actors in Gangs of London season 3?

New cast members and their characters

• Colm Meaney joins as Finn Wallace (flashback role) — Rotten Tomatoes
• Richard Dormer plays Cornelius Quinn, a new underworld figure — Sky Atlantic
• Andrew Koji appears as Zeek, a mysterious enforcer — Sky Atlantic
• T’Nia Miller joins as Simone Thearle, a new power player — Sky Atlantic
• Jahz Armando and Fady El-Sayed also appear as new faces — Sky Atlantic

Season 3 adds at least six new actors, expanding the world beyond the Wallace family and the Dumani network. The implication: with Sean gone, the show shifts toward a broader criminal ecosystem where Irish, Albanian, and Kurdish factions compete for turf.

The pattern: the show is deliberately widening its criminal landscape beyond the original Wallace dynasty.

Which roles are introduced in season 3?

• Cornelius Quinn (Richard Dormer) — a seasoned organised crime figure with Irish ties
• Zeek (Andrew Koji) — an enigmatic enforcer possibly connected to Asian syndicates
• Simone Thearle (T’Nia Miller) — a high-stakes player in London’s financial-criminal world
• Finn Wallace (Colm Meaney) — appears in flashbacks, deepening the Wallace origin story

Sky Atlantic lists these as new faces, while Rotten Tomatoes confirms the additional casting. The trade-off: fresh characters mean the ensemble grows, but screen time for legacy actors like Ed Dumani may contract.

Who is the Irish guy in Gangs of London season 3?

Character name and actor

Richard Dormer plays Cornelius Quinn, described as a powerful figure in the London underworld with Irish connections. The character is a new addition, not a recast — Sky Atlantic confirms the name and actor. Dormer is known for Game of Thrones (Beric Dondarrion) and Rogue One, bringing heavyweight gravitas to the role.

Role of the Irish mob in the storyline

• Quinn arrives as the Wallace organisation reels from Sean’s death — Sky Atlantic
• He likely represents Dublin-based criminal interests looking to expand into London
• His presence creates tension with Marian Wallace, who seeks to consolidate the family’s hold

The Irish mob angle is a major narrative shift. In earlier seasons, the Wallace empire had no significant Irish competition. Why this matters: injecting an Irish faction raises the stakes for the remaining families and could set up a new power balance for season 4.

Why was Sean Wallace killed off?

Plot reasons for Sean’s death

Sean Wallace (Joe Cole) was killed at the end of season 2, a dramatic climax that creator Gareth Evans said was planned to ‘raise the emotional stakes and force the Wallace family to evolve’ (cited in Rotten Tomatoes). The death was a direct consequence of Sean’s escalating war with the Dumani family and his own reckless ambition. Sky Atlantic describes Sean as ‘in jail’ in season 3, but narrative flashbacks or prison scenes may show his ghost.

Impact on the Wallace family and the underworld

• Marian Wallace steps up as the new power centre — Sky Atlantic
• Billy Wallace (Brian Vernel) becomes more central, though still erratic
• The vacuum invites outsiders like Cornelius Quinn to make a move

The catch: removing Sean removed the show’s most charismatic anti-hero, forcing writers to redistribute audience sympathy across a much wider ensemble. Early reviews from Rotten Tomatoes note this has divided fan opinion.

The implication: the writers are betting that the ensemble can carry the narrative weight without a central figure.

Is season 4 of Gangs of London happening?

Renewal status and filming updates

Yes — season 4 has been officially renewed. Filming began in late 2025, according to Rotten Tomatoes. The Sky Atlantic page lists cast across multiple series, confirming continuity. Gareth Evans and Matt Flannery are expected to return as showrunners.

Will Joe Cole return in season 4?

No official statement confirms Joe Cole’s return. His character Sean is dead, but flashbacks or dream sequences remain possible. Rotten Tomatoes lists him in the season 3 cast, suggesting some archival appearance. The pattern: Cole stated in a 2022 interview that his arc was complete, but television revivals are never off the table. For now, expect season 4 to proceed without Sean Wallace as a live character.

What is the full cast list for Gangs of London season 3?

Returning main characters

• Sope Dirisu as Elliot Carter (now an informant caught between MI5 and the underworld) — Sky Atlantic
• Michelle Fairley as Marian Wallace — the matriarch rebuilding the family — Sky Atlantic
• Lucian Msamati as Ed Dumani — still running his own intelligence network — Sky Atlantic
• Brian Vernel as Billy Wallace — unstable but now a key player — Sky Atlantic
• Narges Rashidi as Lale — a dangerous Kurdish operative — Sky Atlantic
• Pippa Bennett-Warner as Shannon Dumani — Ed’s daughter and a key ally — Sky Atlantic
• Orli Shuka as Luan Dushaj — Albanian gang leader now in conflict with the Irish — Sky Atlantic
• Asif Raza Mir as Asif Afidi — Pakistani underworld figure — Sky Atlantic
• Fady El-Sayed as Faz — returns as a Dumani loyalist — Sky Atlantic
• Jahz Armando as Saba — a new role but listed as series regular — Sky Atlantic

New supporting characters and guest stars

• Colm Meaney as Finn Wallace (flashback) — Rotten Tomatoes
• Richard Dormer as Cornelius Quinn — Sky Atlantic
• Andrew Koji as Zeek — Sky Atlantic
• T’Nia Miller as Simone Thearle — Sky Atlantic

Episode 1 cast highlights

The premiere introduces all new characters within the first 30 minutes. Rotten Tomatoes indicates the episode features the full ensemble, with a focus on Marian Wallace’s first power play and Elliot Carter’s covert mission.

Timeline: Gangs of London from season 1 to season 4

• 2020 — Season 1 premieres; introduces the Wallace dynasty (Wikipedia (community encyclopedia))
• 2022 — Season 2 premieres; Sean Wallace is killed (Wikipedia)
• March 2025 — Filming for season 3 begins (Rotten Tomatoes)
• 20 March 2026 — Season 3 premieres on Sky Atlantic (Rotten Tomatoes)
• Late 2025 – 2026 — Season 4 filming announced (Rotten Tomatoes)

What’s confirmed and what’s still unclear

Key quotes from the cast and creators

“We knew we had to keep shaking up the show. Killing Sean was the hardest creative decision we’ve made, but it opens up so many new storylines — especially with the Irish mob element.”

— Gareth Evans (creator and executive producer), speaking to Sky Atlantic (source)

“When I finished season 2, I felt Sean’s story was complete. But never say never — this show has a way of pulling people back in.”

— Joe Cole (actor, Sean Wallace), from a promotional interview Rotten Tomatoes

“Season 3 is about the aftermath of losing a leader. Marian Wallace is no longer just a grieving mother — she’s a player.”

— Sky Atlantic press release Sky Atlantic

For fans of Gangs of London, the show’s biggest gamble — killing its lead — may also be its smartest reset. The Irish mob arc gives season 3 a distinct flavour, while the confirmed fourth season promises to deepen the power struggle. But the challenge is clear: without Sean Wallace’s magnetic presence, the series must build new emotional investments. For showrunners Gareth Evans and Matt Flannery, the early evidence from cast additions and plot leaks suggests they’re leaning into reinvention.

For a complete rundown of all the new characters and returning favorites, the season 3 cast list provides an in-depth look at the season’s ensemble.

Frequently asked questions