Tarantino's Death Proof will be released via Momentum Pictures/Dimension Films on Sept 21 with Rodriguez's Planet Terror released at a later date to be confirmed soon.
Tarantino's longer cut of Death Proof will screen in Competition at this year's Cannes Film Festival.
Death Proof is about a psycho serial killer's death machine.
Planet Terror is about a town ravaged by a mysterious plague.
The announcement from TW said the films ' will be distributed separately internationally where the culture of grindhouses grinding out movies back to back is not familiar.'
The three-hours-plus double-bill version has not met box-office expectations in the US.
Harvey Weinstein said in a statement: 'We are very proud of Grindhouse, which earned overwhelming rave reviews for its audaciousness and boldness. Based on US audience's positive reactions to Quentin Tarantino's Death Proof and Robert Rodriguez's Planet Terror combined with their resistance to the three-hour running time, we've revised our UK release plans to allow audiences the chance to see the films separately, like they will be shown in all international territories.'