McMillan wasn’t born into a filmmaking family; she fell into the profession almost by accident. After training as a secretary, she took on a job in a London architect firm where she remembers experiencing a kind of aesthetic awakening. She then worked as a stylist with photographer Michael Boys before getting her first set decorator roles on commercials. Work in short films followed, before the move over to features. “Commercials are very good training,” she explains. “You have to make decisions really quickly and learn about compromise.”
Landing the position of set decorator on the Harry Potter series in 2001, she relished the financial and creative freedom the production offered. “When I think about the last ten years on Harry Potter, I rarely had to compromise. I had enough time and money to get it right.” Working alongside production designer and long-time collaborator Stuart Craig, McMillan was quick to take advantage of the franchise’s resources to bring J.K. Rowling’s world to life.
The Harry Potter prop store at Leavesden was legendary. When the Room of Requirement in Deathly Hallows was transformed by 13 mountains of furniture, much of it came from the department’s own stocks. The sheer scale of some of the sets, meanwhile, required months of military-like preparation. McMillan explains how they created the Great Hall set for the Yule Ball scene: “We covered entirely the stone walls with silver lamé and made 17 sets of matching silver curtains with elaborate swags and tails, huge ice sculptures cast in resin and 250 silver cross-legged stools.” This alone took three months to prepare.
The films’ magical elements gave McMillan and Craig plenty to play with, so newly-sourced or existing items would often need to be adapted to fit their supernatural surroundings. “The house in Grimmauld Place appears magically in the middle of a very tall terrace, so it needed to look squeezed. Stuart designed the rooms with particularly high ceilings so we worked with the construction and prop teams to add extra height to wardrobes, dressers and four-poster beds to continue the illusion.”
For McMillan, one of the most satisfying aspects of the Harry Potter series was collaborating with others who shared her passion for getting things right. “On Harry Potter, working with the very best on every level; graphics, visual effects, prop makers – Pierre Bohanna’s team – nothing was impossible. There is great satisfaction that real teamwork at that level gives you.”