Tom Hardy will play both Kray twins in the forthcoming big screen biopic 'Legend'.
The 'Tinker Tailor Soldier Spy' actor is in talks to play famed criminals Reggie and Ronnie Kray - who were known as perpetrators of organised crime in the East End of London during the 1950s and 1960s - and he admits he hadn't ever "dreamt" of playing two character in the same film.
The 36-year-old star told the MailOnline: "All the plans are on the table. There's a lot of crossing the t's and dotting the i's, and there's a lot of shift and geography to work out.
"It would be difficult. It's quite technical and I'm a bit of an anorak.
"There's a physical transfer; we'd have to shoot one bit, go away come back and shoot it all again with another part. I've never dreamt of playing two people on the screen!"
The script was penned by Brian Helgeland, and although it largely focuses on the Kray brothers other stars including Frank Sinatra and Judy Garland, who were often spotted at Reggie's Knightsbridge nightclub Esmeralda's Barn, are mentioned.
The film is expected to begin production in the UK later this year.

Kevin Bacon will star in '6 Miranda Drive'.
The 55-year-old actor is in talks to feature alongside Radha Mitchell in 'Rogue' director Greg McLean's forthcoming film, according to The Hollywood Reporter.
Jason Blum's Blumhouse banner and Matt Kaplan from Chapter One Films are producing, while Robyn Marshall from Chapter One will co-produce.
The film was also written by McLean and revolves around a family who bring home a supernatural force when they return from a trip to the Grand Canyon.
Bacon - who was catapulted to the spotlight following 1980's hit film 'Friday the 13th' - recently revealed he thinks fame is "bizarre", but after being in the spotlight for over 30 years he has adjusted and grown accustomed to living in the public eye.
He said: "Fame is very, very bizarre. If you just got it all of a sudden, out of nowhere, you would be like: 'This is very weird.'
"Then you kind of get used to it and think: 'This is what my life is."
The hunk hit the big screen last year in 'Skum Rocks!' where he starred as himself and 'R.I.P.D.' as Boston Police detective, Bobby Hayes.

Robin Thicke wants to win Paula Patton back.
The 'Blurred Lines' singer - who announced on Monday (24.02.14) he and the actress were separating after eight years of marriage - is hoping to show his estranged spouse he can be a good husband in a bid to persuade her not to file for divorce.
A source told TMZ Robin "desperately wants to save his marriage" and is going to curb his partying ways as he wants to try and convince his childhood sweetheart he can change and be a good husband.
The source added that the singer is also "really concerned" about their three-year-old son, Julian, and doesn't want him raised in two separate homes.
The split comes after Robin was seen dancing closely to a mystery brunette in a nightclub in Paris in January, while last year another woman claimed the star had kissed her at a party in New York.
Robin and Paula, 38, announced on Monday they had "mutually decided to separate at this time", but will remain "best friends".
The singer had axed three consecutive concerts on his North American tour in the wake of the split, which are set to be rescheduled and the tour will resume in Washington tomorrow (27.02.14).

Tara Reid accepted the leading role in 'Sharknado' as a joke.
The 38-year-old actress stars alongside former 'Beverly Hills 90210' actor Ian Ziering in the film, which sees a freak hurricane swamp Los Angeles with hundreds of deadly sharks terrorising its residents, and admits she never expected the made-for-TV movie to be so successful.
She said: "I'm just as stunned as everyone else. Come on, I did it as a joke! I didn't even think anyone was going to see it.
"And then what happened has never happened before on any movie. Even now, you thought the buzz was going to stop about 'Sharknado', but it just keeps going."
Following on from its success, Asylum Films - who also made 'Snakes on a Plane' - are now working on a sequel which will also star Tara Reid and she says it will be even more "ridiculous" than the first instalment.
Speaking to HLNtv, she said: "In the scene in the first film, where I ended up in the stomach of the shark, which was so ridiculous that you think, 'How are you going to top that?' Well, we're actually pretty close to topping it."
"I can't tell too much. I'm not allowed to, to be honest with you. But you can definitely expect it to be as entertaining - if not more, believe it or not - as the first one."
The 'American Pie' star was spotted filming scenes for 'Sharknado 2: The Second One' in New York last week and the movie is set to be released in select cinemas in July.

Chantel Jeffries has broken her silence about her relationship with Justin Bieber.
The 21-year-old model has spoken for the first time since the 'All That Matters' singer's DUI arrest in Miami on January 23, and was quick to shut down rumours they are dating after she was spotted on numerous outings with the star including a romantic getaway to Panama.
During the brief interview with E! News host Terrence J, Chantel insisted: "I didn't date Justin."
The blonde beauty - who strikes an uncanny resemblance to Kim Kardashian - addressed accusations she is a gold-digger who befriended the 19-year-old singer for his fame and wealth.
She laughed: "Oh my gosh. If anything, you could say I'm a 'goal' digger. I have my own goals and I'm focused on those."
And despite claims no one in Justin' entourage is willing to say no to him, she insisted that wasn't the case, but then claimed it wasn't her "place" to comment on his antics.
Chantel added: "That's not true... I'm not around all the time. In the past, I don't know what's happened with him, and it's not my place to say anything.

Kylie Jenner was "obsessed" with her sister Kendall when they were younger.
The 16-year-old reality TV star used to follow her older sibling "everywhere" and the pair - who are the daughters of Kris and Bruce Jenner - were so close they even used to dress identically.
Speaking to Mexico's Marie Claire magazine, Kendall, 18, said: "She was obsessed with me. She followed me everywhere."
Kylie added: "If she got up in the middle of the night, I got up of the middle of the night. I literally couldn't leave her side. We even matched everything we wore."
Kendall - who made her debut at New York Fashion Week and London Fashion Week recently - admitted she has always wanted to be a model.
She said: "Even as a kid, I remember always looking at my mom's magazines, I would look up to them and I thought they were so beautiful and they seemed very elegant and cool.
"It's just something I really wanted to be."
Kylie is planning to pursue a career in fashion design but also wants to try her hand at acting.
She said: "Right now I love designing and I want to pursue that career once I turn 18. But acting is something I would regret not giving a chance when I'm older, so I would love to try it and see if I like it."

Rita Ora showcased her eccentric style as she stepped out in New York City. The singer clashed her quirky cow print backpack with a fur coat and red lipstick.

Kim Kardashian kept warm in a camel coloured fur coat as she stepped out in New York with her fiance Kanye West and daughter North.

Reese Witherspoon added a splash of colour to her casual look with a bright yellow bag as she visited friends in Santa Monica, California.

Ellie Goulding looked stunning in a printed tee and leather trousers as she exited the BBC Radio 1 studios in London. The 'Burn' singer accentuated her natural beauty with simple make-up and slick of pale pink lipstick.

Paris Hilton looked fresh faced as she stepped off a flight at LAX in Los Angeles. The heiress cuddled her pet pooch as she made her way out of the airport.

Jessica Alba clashed her navy striped sweater with a statement red bag as she arrived at LAX airport yesterday.