Josh Duhamel has praised ex-wife Fergie as an "amazing mom"

He told Us Weekly magazine: "We all have to work together to make sure that this thing works.

"if you're in Vancouver or New Mexico, it's one thing. But when you're in Cape Town, there's no going back and forth on the weekends," he explained. "You're either there you're not. So it's a struggle."

Josh admitted playing washed-up killer and deadbeat dad Tommy in London Calling taught him what he needed to work on as a parent in his real life.

He said: "It was fun to look at some of the things that I could even do better as a dad.

"I work a lot, and I often have a lot of guilt about not being there as often as I could be. So I try to maybe overcompensate or do things to be there often.

"But at the same time, you want your kid to look and see [that] this is what you have to do to provide for your family. So on the one hand, you can't be there all the time, because you've got to be setting an example.

"But on the other hand, you might be missing out on life moments that you'd [be there for] if you were a 9 to 5 dad who went to work every day and came home. So it's a constant struggle in this business. It's not easy...

"There's a lot of things I'm good at and there's a lot of things I need to work on. And I think that that's one of the things I loved about this script and the story is that this guy inherently was a good dad, but had missed a lot and hadn't stepped up as much as he realized as he should have."

Josh found a lot of similarities between himself and his London Calling character.

He said: "It's like an athlete who's at the end of his career, who knows that he's who thinks that he's still got it, still got the fastball, still got all the speed, but now you start to lose a step as you get older.

"And I think that anybody at my age starts to feel that. You know, his eyesight is not quite what it used to be. He's not as good of a shot as he used to be."