The company celebrated the queen's visit by creating a special version of its google.co.uk home page, which featured a silhouette of her head as the second 'G' and a regal crown atop the 'E' in their logo.

During the visit, the queen and her husband, Prince Philip, saw a demonstration of the company's technology and met schoolchildren who won a competition to design their own Google 'doodles' - what the Mountain View, California-based company calls special editions of their blue, green, red and yellow logo.

The royal couple met users of the Google-owned YouTube video Web site, including Mr Peter Oakley, an 81-year-old known as 'Geriatric1927.'

Mr Oakley's videos on the site earned him a nomination for a YouTube award in 2006.

The queen herself has a presence on YouTube - she launched the Royal Channel in Dec. There are 54 videos on the channel, which range from the Queen's 1957 Christmas message to a day in the life of Prince Charles.

On Thursday, she uploaded archive footage to the channel of a 1969 reception at Buckingham Palace for British Olympians.

After their visit to Google, the queen and Prince Philip planned to host a reception for nearly 600 British Olympians at the palace, the monarch's London home. -- AP