PR for my new film

I am an independent film maker, just released my first feature documentary. The film has won festival awards and is now available to stream online. I have just confirmed my first big media interview and require someone to do one day's PR around/off the back of this big name celebrity interview to make sure we get traction for the film across all other media (TV, radio, web). If I find the right person the job could lead to extended / repeat contracts. I WOULD PREFER PROFESSIONALS WITH EXPERIENCE IN FILM/ENTERTAINMENT PR.