David and Victoria Beckham appeared in public on Monday night after dismissing fresh allegations of infidelity involving the England captain.
The Beckhams posed for the press at the famous restaurant
The couple have "instructed lawyers" after a second woman claimed in a Sunday newspaper she had an affair with David Beckham, a spokesman said.
They have already described prior claims that David Beckham had relations with a former assistant as "absurd".
The Beckhams presented a united front for the press at Claridges in London.
They spent three hours at the Gordon Ramsay restaurant at the famous central London hotel.
Both posed smiling for photographers after their meal.
Victoria wore a strappy bright orange knee-length dress, while David was attired in a black suit, white shirt and black tie, with his hair tied back.
Beckham has been holding talks with his advisers following a week of newspaper allegations about his private life.
The statement was issued by 19 management, the agency which represents former Spice Girl Victoria.
It also described the latest allegations as "unsubstantiated".
But News of the World spokeswoman Hayley Barlow said: "We note a further dismissive statement issued by the Beckham camp, this time on behalf of both Mr and Mrs Beckham.
"The News of the World's position remains totally unchanged.
"Once again we stand by our reports 100% - our revelations speak for themselves."
The Beckhams spent Monday at their Hertfordshire home - dubbed "Beckingham Palace" by the tabloids - after arriving back in Britain in the early hours.
Show of support
The couple and sons Brooklyn and Romeo were understood to have been enjoying an early celebration of Victoria's birthday. She turns 30 on Saturday.
Victoria had given a public show of support for her husband the day before as he took to the field for Real Madrid.
She was in the stands as Beckham started the La Liga
match against Osasuna which Real Madrid lost 3-0.
She had given a nervous smile and a wave as she took her seat and later was
seen to comfort son Brooklyn, who appeared distressed.
Recent stories over the 28-year-old football hero's alleged infidelity have filled the pages of all the British tabloid newspapers.
Former Mirror editor Roy Greenslade recently told BBC News Online there had not been a bigger tabloid story since the serialisation of Andrew Morton's book about Princess Diana in the Sunday Times in 1992.