Meghan Markle and Prince Harry's four demands for Oprah interview

Meghan revealed she had suicidal thoughts while pregnant with Archie. [Courtesy]

In the opening minutes of Meghan Markle's interview with Oprah Winfrey, the TV legend made it clear that no subject was off limits.

And she lived up to her promise, asking the Duchess of Sussex and her husband, Prince Harry, tough questions about racism within the royal family, family rows and mental health.

However, the couple reportedly had four demands for how their interview was used by broadcasters who paid a huge amount to be able to show it around the world, including ITV.

The network paid £1m for the rights to show the two-hour programme on Monday night, and it's expected to be extremely well watched. Last night 17.1million Americans tuned in to watch, making it the second most-watched TV special this year.

According to The Australian, Meghan and Harry said that the show must be used in full and could not be edited in any way.

Their second condition was that the adverts for the show could not be edited at all.

Thirdly, they said that the show synopsis, which features in programme guides, couldn't be edited.

Finally, they said that broadcasters were only allowed to use images and videos they provided to promote the show.

After it's US airing last night, Meghan and Harry's claims have been widely analysed and discussed.

The most shocking moments saw the couple accuse a member of the royal family being concerned about how Archie's skin could be.

She also said that she had suicidal thoughts during her time in the royal family, saying that she "didn't want to be alive any more".

During the interview, which she was not paid for, she claims that she went to "the institution" to say she needed help but was told she wasn't allowed to.

She said she was "ashamed" to admit it at the time but "knew that if she didn't say it she would do it".

She says it was a "real and frightening and constant thought" but that Prince Harry "cradled her".

The Duchess of Sussex said she "couldn't be left alone" when she was around five months pregnant with Archie.

When Oprah asks her directly if she was "thinking of harming herself or having suicidal thoughts" Meghan replies "yes".

She claims she asked one of the "most senior" people if she could get help but was told it wouldn't be good for the institution.

Meghan reached out to one of Princess Diana's friends for help.

Joining the interview later, Harry admits it was very difficult for him and that it sent him to a "dark place".

Meghan also claimed that the Duchess of Cambridge made her cry, but said Kate had apologised and bought her flowers to say sorry. She said she was a "good person".