The Ipcress File Reviews
Caine skillfully resists any temptation he may have had to pep up the proceedings. In fact, his consistent underplaying adds considerably to the pull of the picture.
Filmcritic.com
Goofy fun, but hardly a classic. James Bond, you ain't got nothin'!
Full Review
| Original Score: 3/5
Deighton's plot is a mild headache of deceit and double-dealing that glides stylishly and with much wit around Caine's Sergeant Palmer, a cocky London bachelor and middle-ranking scion of the MoD's counter-espionage department.
Ozus' World Movie Reviews
Offers a far more authentic view of the morally ambivalent world of espionage than most spy thrillers.
Full Review
| Original Score: B
Nitrate Online
A vintage performance from Caine as anti-Bond Harry Palmer keeps this from becoming a period relic.
| Original Score: 3/5
Cinema em Cena
Embora inferior a Funeral em Berlim, que contaria com um roteiro melhor, o primeiro filme da série ainda funciona graças à direção de Furie, à atuação irônica de Caine e à forma curiosamente monótona com que o cotidiano da espionagem é retratado.
| Original Score: 3/5
Las Vegas Review-Journal
Caine's the coolest anti-007 ever ...
| Original Score: 4/5
Atlantic City Weekly
The coolest secret agent of them all
| Original Score: 4/5
Mountain Xpress (Asheville, NC)
Flashy direction, convoluted plot, great performances from Caine, Green, and Dole.
| Original Score: 4/5
Apollo Guide
The Ipcress File is great fun because it's smart, realistic, and irreverent without being full of itself.
Full Review
| Original Score: 85/100
The Ipcress File is as classy a spy film as you could ask to see.
Full Review
| Original Score: 3/5
Guardian [UK]
Caine's star-quality and absolute ease in front of the camera are fully formed.
Full Review
| Original Score: 4/5
Empire Magazine
Caine, Zulu under his belt and Alfie ahead, is the cheeky working class but aspirational bright spark hero par excellence, captured at the exact moment he became a star.
Full Review
| Original Score: 5/5

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