Celebrity hairdresser Nicky Clarke and his girlfriend Kelly Hoppen put on a united front last night following claims by a Sunday tabloid he repeatedly cheated on her with a prostitute.

The coiffured pair linked arms as the made their way down the red carpet at the Sex And The City premiere in London's Leicester Square, but moved swiftly passed reporters to avoid being quizzed over the allegations.

Miss Hoppen, an interior designer whose client list includes David and Victoria Beckham, appeared to be making every effort to keep a brave face on as they posed for photographers.

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Standing by her man: Nicky Clarke and Kelly Hoppen at the London premiere of Sex And The City last night

Clarke, 49, began dating the twice-divorced 48-year old last summer after having met her at an Elton John party.

Miss Hoppen was once married to Sienna Miller's father Ed and has also dated the footballer Sol Campbell.

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On the move: the pair moved swiftly passed reporters as they made their way along the red carpet

But Clarke's private life is complicated at best.

He raised eyebrows earlier this year while receiving an OBE at Buckingham Palace by bucking convention and opting to take his former wife and current business partner Lesley instead of his current partner.

The exes, who are parents to Harrison, 21, and Tellisa, 18, remain close - they live just four doors apart and occasionally take holidays together.

Nicky charges £450 per haircut and his clients have included Diana, Princess of Wales, singers George Michael and David Bowie and actress Liz Hurley.