'Real life Martha' Fiona Harvey claims Netflix's Baby Reindeer is ...

The claimed "real life Martha" depicted in hit Netflix series "Baby Reindeer" has spoken publicly for the first time, denying she ever stalked show creator Richard Gadd.

Scottish woman Fiona Harvey, 58, was interviewed at length by UK journalist Piers Morgan on his YouTube show Uncensored on Thursday.

She accused the show's creator and lead actor Richard Gadd of being "a liar", "psychotic" and "completely off his head", as well as implying he made up claims of sexual assault.

The Netflix drama "Baby Reindeer", released in April to rave reviews, is promoted as being an autobiographical story depicting real-life events.

In the seven-part series, comedian Richard Gadd portrays Donny, who is stalked by a woman called Martha after he serves her a cup of tea in a pub.

Viewers quickly connected Ms Harvey to the on-screen character Martha following the show's release due to their physical similarities and posts she had made on social media.

Ms Harvey said she received death threats over the show, which she labelled as "defamatory" and "a work of fiction".

"I think that anyone going along and being in that play and doing this to somebody, I find the behaviour outrageous," she told Piers Morgan.

Gadd claims he received 41,071 emails, 744 tweets and 106 pages of letters from a woman who inspired the creation of Baby Reindeer.

In the interview, Ms Harvey initially told Piers Morgan "I don't think I sent him anything" before acknowledging on further questioning that there were likely "a couple of emails", "18 tweets" and "one letter".

Asked where Netflix obtained details of the thousands of emails, tweets and text messages the show claims she sent to Gadd, she asserted "I think (Richard Gadd)'s probably made it up himself".

Harvey also denied ever sitting outside Gadd's house, attacking his girlfriend or contacting his parents.

"You're 100 per cent sure it's not you?" Piers Morgan asked her.

"Yes," Ms Morgan replied.

Ms Harvey says she is considering legal action against Netflix and Richard Gadd over the show's depiction and the criticism she has faced since its released.