Worked as physician at Scottish hospitals

Met Andrew Macdonald at the Edinburgh Film Festival

Moved to London; continued working as physician

Wrote first feature film, "Shallow Grave", directed by Danny Boyle, produced by Andrew Macdonald and featuring Ewan McGregor

Wrote the screen adaptation of Irvin Welsh's novel "Trainspotting", also directed by Boyle and featuring McGregor

Third screen collaboration with Boyle and McGregor, the romantic comedy, "A Life Less Ordinary"

Adapted Alex Garland's novel "The Beach"; directed by Boyle and produced by Macdonald; McGregor had originally expected to star but due to his other commitments, lead role given to Leonardo DiCaprio

Penned the film, "The Final Curtain" directed by Patrick Harkins

Scripted the short film "Alien Love Triangle"

Wrote the screenplay for the horror film, "The Seeker: The Dark Is Rising"