Warner said: "I don't know what Beckham's fees would be, but he can play a role for England like nobody else. Beckham is a world figure, acceptable to everyone. He's almost like Pele. So you have to use him. Let him sell England to the world and be the face of your campaign.
"The British used Beckham to help them win the Olympics. Now your FA must do the same for the World Cup."
Warner also pointed an accusing finger at FA chief executive Brian Barwick, chairman Lord Triesman and former chairman Geoff Thompson, now a FIFA vice-president.
He rapped: "You can't win the bid just because you are Lord or Lady whatever. You can't win the bid by staying hidden away in London.
"You have to win the bid by bonding with people, knowing people on a first-name basis, letting them know who you are and what you stand for.
"Nobody in world football knows Lord Triesman or Brian Barwick or Geoff Thompson.
"People vote on emotions. I've been in FIFA for 25 years and I've seen super, first-class bids lose to inferior bids on the warmth of the bidder."