J ohnny Depp stepped out in Leicester Square with fiancée Amber Heard for the London premiere of his latest film, Mortdecai, despite widespread rumours the Hollywood pair had parted ways.

Depp, 51, who plays suave art dealer Charlie Mortdecai win the new flick based on Kyril Bonfiglioli's novel, kept it cool in a black suit, sporting his now trademark moustache.

But the actor admitted that his character's trademark tache had caused him some problems.

Mortdecai London Premiere 1 /14 Mortdecai London Premiere Androgynous Amber worked a black suit for her red carpet appearance (Picture: Dave Benett) Hand in hand Amber was on had to support Depp at the premiere of his new film (Picture: Dave Benett) Sheer look Jade Ewen wore a leather look dress with sheer panelling (Picture: Dave Benett) Look at me Terry Gilliam jokingly covers up Johnny's face as he poses for a photo (Picture: Dave Benett) Copy cat Amy Willerton looked to be wearing a similar suit to Amber (Picture: Dave Benett) Pretty in pink Jasmin Walia showcased her toned abs as she worked the red carpet (Picture: Dave Benett) Making appearances Mikey Bromley, Betsy-Blue English, Parisa Tarjomani and Charlie George of Only The Young (Picture: Dave Benett) Funny man Paul Bettany said he was pleased to have done comedy work with Johnny (Picture: Dave Benett) Revealing Nadia Forde opted for a plunging LBD (Picture: Dave Benett) Dressed up Mark Ronson cut his usual stylish figure (Picture: Dave Benett) Pretty in prints Dionne Bromfield worked a cute two piece (Picture: Dave Benett)

He said: 'I admired the work in the moustache - each hair was put in one hair at a time. It was amazing.

'The moustache was great until this - Paul Bettany (who plays Mortdecai's servant Jock Strapp) made me laugh really hard and my moustache pinged off and it shot like four feet across the room. It was so funny.'

'Charlie Mortdecai was almost a fully realised character in the books,' he added.

'I find when you're playing a character like Charlie Mortdecai you can essentially get away with everything. It's a lot of fun. It's a lot of fun to be able to give it everything and make people laugh.'

He may have had fun with the moustache but Heard, 28 - who worked an androgynous look in a fitted black jacket with wide leg trousers for the premiere - wasn't too happy with the look.

When asked if the actress was a fan of his new look Depp said: “No, she hated it .'

Depp was joined on the red carpet by co-star Bettany who said: 'I haven't had a chance to do a lot of comedy in my career and I was just lucky that Johnny had seen it in me.

'We've made three films together now and we've laughed our way through every one of them, but this time we were allowed to do it on screen which was really nice.'

Joining Depp and Heard at the premiere was the film's director David Kopp.

Gwyneth Paltrow, Ewan McGregor and Olivia Munn, who also appear in the film, did not attend.

Mortdecai will be released in cinemas on January 23.