Ewan McGregor and Christian Bale 'performed too-long' sex scene

Hollywood stars Ewan McGregor and Christian Bale performed a gay sex scene that lasted longer than it needed to be, it has emerged.

Speaking on BBC One's The Graham Norton Show, McGregor revealed the pair carried on shooting the steamy episode because they did not hear the camera crew shout "cut".

However, the a-listers would not have required condoms, as the tryst was only simulated.

McGregor said he does not really enjoy shooting sex scenes as he believes them to be highly uncomfortable.

The 40-year-old actor explained he finds it increasingly difficult to partake in the filming as he gets older, especially when the girls he stars alongside tend to be much younger than he is.

"They are awkward because it is a strange and bizarre thing to be doing. It's not a normal situation," the Angels and Demons star added.

In 2006, McGregor featured alongside Holly Aird, Eileen Atkins and Tom Hardy in the aptly titled Scenes of a Sexual Nature.