Jamie Dornan has opened up about the unusual research he carried out for his saucy role in Fifty Shades Of Grey.

The actor stars as bondage billionaire Christian Grey in the movie, alongside Dakota Johnson.

He told Elle UK that he visited a private sex dungeon in a house to better understand his role.

The Fall actor said of the memorable experience: “I went there, he offered me a beer, and they did…whatever they were into.

Dakota Johnson
Dakota Johnson stars in Fifty Shades of Grey (Chase Rollins / AFF-USA.COM/AFF/EMPICS Entertainment)

“I saw a dominant with two submissives, and he became our kink adviser on the film.”

The former Calvin Klein model admitted he wasn’t entirely comfortable going back to his actress wife Amelia Warner and their baby daughter after the “interesting” evening.

“I had a long shower before touching either of them,” he told the February issue of the mag.