[1] Park is best known for her collaborations with Edgar Wright, having produced all of his work over the past two decades; their partnership began with the award-winning television series Spaced.

This also marked the beginning of their long-standing collaborations with Simon Pegg and Nick Frost, which continued with the cult comedy Shaun of the Dead[3] for which Park received a BAFTA Outstanding Debut Award nomination.

Park has also worked closely with Joe Cornish over the years, their relationship beginning with the SXSW Audience Award-winning and BAFTA Outstanding Debut-nominated feature Attack the Block and most recently his supernatural detective thriller Lockwood & Co..

In addition to her work with Wright and Cornish, Nira has produced: Greg Mottola’s Paul, written by and starring Pegg and Frost; Ben Wheatley’s Cannes-premiered black-comedy Sightseers; Jeremy Lovering’s critically acclaimed psychological horror In Fear, which premiered at Sundance; Cuban Fury, starring Nick Frost, Chris O’Dowd and Rashida Jones; Man Up, starring Simon Pegg alongside Lake Bell; and Sacha Baron Cohen’s action comedy Grimsby.

In 2020, Park produced Ben Wheatley's Rebecca,[4] starring Lily James, Armie Hammer and Kristin Scott Thomas for Working Title Films and Netflix.