Rhys Ifans (Notting Hill) and Ed Skrein (The Transporter Refueled) have boarded scribe Malachi Smyth’s Brit List topper Gateway 6. Tanel Toom makes his directorial debut with the project. His previous short, The Confession, was nominated for an Academy Award in 2011. Will Clarke’s Altitude Film will handle international sales at AFMGateway 6 is a taut science fiction thriller that combines the solitary abandonment of Moon with the claustrophobic atmosphere of Das Boot and the survival elements of Alien. Set in the future, on a war-ravaged Earth, four soldiers man the last bastion in a sea-covered continent — awaiting a relief crew or the enemy, whichever comes first. But as the empty weeks turn to months, paranoia descends that tests relationships to the breaking point. Especially with the arrival of a deserted boat. Was it the help they’d been so anxiously awaiting, or something far more sinister?

Ifans will next be seen in Oliver Stone’s Snowden and James Bobin’s Alice Through The Looking Glass while Ed Skrein has just completed a major role as lead villain Ajax in Deadpool opposite Ryan Reynolds. Ifans is repped by 42 and UTA, and Skrein is represented by 42 and CAA.

Gateway 6 is due to start shooting in Estonia next spring. Ben Pullen of Sentinel Entertainment and Matthew James Wilkinson for Stigma Films are producing with Pippa Cross serving as exec producer. Ivo Felt will be co-producing. Previous Brit List entries of best unproduced screenplays include The King’s Speech, My Week With Marilyn and The Best Exotic Marigold Hotel.