Luke Treadaway and Ruta Gedmintas are starring in a movie version of “A Street Cat Named Bob: And How He Saved My Life.”

Production is launching in October in the U.K. with Adam Rolston producing for his new Shooting Script Films. Tim Smith and Paul Brett of Prescience (“The King’s Speech”) are executive producers and financiers on the project. The Exchange is handling international sales.

Roger Spottiswoode (“Tomorrow Never Dies”) will direct from a script by Tim John.

The book was written by street musician James Bowen, a recovering addict who was barely getting by on the streets of London when he met a sick stray ginger cat, named him Bob and nursed him back to health. He then took Bob with him as he played guitar — and the pair became an instant attraction.

The book was on top of the Sunday Times’ bestseller list for 76 weeks. Bowen wrote a follow-up book, “The World According to Bob: the Further Adventures of One Man and His Streetwise Cat.”

Treadaway’s film credits include “Unbroken” and “Clash of the Titans.” He won the Laurence Olivier Award for best actor for his performance in “The Curious Incident of the Dog in the Night-Time.”

Gedmintas stars in the FX series “The Strain.”