So far, Sydney Chandler is the only officially confirmed cast member, playing the female lead.
Equity-affiliated English actor Lawther is in Thailand, filming, sources tell Deadline.
Some of the other main cast are members of UK acting union Equity.
(L-R) Alex Lawther and Samuel BlenkinGetty Images
But the actors strike threw them another curveball.
Around 400 Thai nationals are employed in the productions crew; no details have emerged about Thai cast.
That film is already in post-production.
Chandler is repped by UTA and Jackoway Austen Tyerman Wertheimer Mandelbaum Morris Bernstein Trattner & Klein.
Lawther is with Conway van Gelder Grant, UBBA and UTA and managed by Entertainment 360.
Blenkin is repped by Insight Management and Production and managed by Circle of Confusion.
Davies is represented by United Agents, Anonymous Content, Sloane Offer Weber & Dern and Personal PR.
