Sir David's dream..

I've been very lucky but this is without doubt my proudest moment

- BY TOM BRYANT

SIR David Beckham vowed to use his knighthood for the good of the UK as he received the honour from King Charles yesterday.

Friends of the football legend said he would not "sit idly back" and plans to accelerate his charity work and try to make a difference.

The pal added: "There are some celebrities who get a knighthood and you don't hear from them again... but David wants to use this incredible honour to champion the causes he believes in, and raise their profile. He is determined to give back to the UK."

The former England captain, 50, who was recognised for his services to sport and charity in a ceremony at Windsor Castle, described accepting the honour as his proudest moment.

Sir David has supported a number of causes including serving as a goodwill ambassador for humanitarian aid organisation Unicef since 2005. Last year he was named an ambassador for The King's Foundation, an educational charity established by Charles in 1990.