Ewan McGregor pulled out of his scheduled appearance ITV's 'Good Morning Britain' on Tuesday, after realising it was hosted by Piers Morgan.

The actor disagreed with comments Morgan had made about Saturday's Women's Marches across the globe and decided not to go ahead with his appearance on the show minutes before he was due to be interviewed.

Ewan McGregor earlier this week at the premiere of T2Ewan McGregor pulled out of his 'Good Morning Britain' interview this morning

Explaining his decision on Twitter, McGregor wrote: "Was going on Good Morning Britain, didn't realise @piersmorgan was host. Won't go on with him after his comments about #WomensMarch."

In response Morgan tweeted: "Sorry to hear that @mcgregor_ewan - you should be big enough to allow people different political opinions. You're just an actor after all."

The host then followed up with a series of tweets aimed at McGregor, including telling the actor: "A real man would have come on and debated it with me, not run away like a coward."

"Why should actors be deemed to have more important or correct political opinions than anyone else?" Morgan added. "Ewan McGregor IS just an actor, not a brain surgeon."

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Morgan also addressed McGregor's absence on the show, saying: "Sorry that Ewan McGregor's not here. He couldn't bear the thought of being on the sofa with me because he doesn't agree with me about the women's march.

"I have to agree with what an actor thinks about a particular issue because they're actors. And as we know actors' views are more important than anybody else's," Morgan added.

When asked about the incident a 'GMB' spokesperson told BBC News: "Ewan came [in] this morning to be interviewed about his new film but decided not to go ahead with it."

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Discussing the worldwide Women's Marches during Monday's 'GMB' Morgan had said: "For every woman who marches with good intent there are women who I would categorise as 'rabid feminists' who don't like men very much."

"What I say is if you want to affect change, wait for the right moment and then go after it," he added. "Having generic vacuous marches to make yourself feel good is pointless." 

On Saturday McGregor had tweeted his support for the Women's Marches, writing: "I'm with you in spirit today women of the world. My daughters are marching. I'm so proud to see this extraordinary power."