This is a masterclass in how the most local, most hemmed-in stories can reverberate with the power of big, universal themes.
Leslie Felperin, Variety
An exceptional one-man show for Tom Hardy, this ingeniously executed study in cinematic minimalism has depth, beauty and poise.
David Rooney, Hollywood Reporter
A virtuoso narrative and technical experiment that doesn't stint on dramatic complexity or heart.
Emma Dibdin, Digital Spy
Few actors could shoulder this level of scrutiny - every twitch and shift in expression is magnified - but Hardy's restraint is breathtaking.
Xan Brooks, Guardian [UK]
Having stripped away all but the bare necessities, having reduced the components to a car and a man - they make a classic error of overcompensation. Locke, it occurs, is quite the most garrulous exercise in minimalism I've witnessed in years.
David Jenkins, Little White Lies
It's something of a miracle that Knight manages to protract the material to feature length, though that's more down to Hardy's powerhouse presence as opposed to repetitious lattice of lens-flared motorway lights...
Robbie Collin, Daily Telegraph
There are no car chases and no car crashes, and no-one else appears on screen. Around half of the dialogue is about concrete. It's one of the most nail-biting thrillers of the year.
Lee Marshall, Screen International
Locke is a gripping and deeply cinematic human and ethical drama.
Oliver Lyttelton, The Playlist
It's an impressive achievement in a very impressive film, one that can only increase the esteem in which both Knight and Hardy are held.
Jo-Anne Titmarsh, HeyUGuys
This is a groundbreaking and beautifully rendered film, with Tom Hardy in brilliant form.