The Queen congratulated Judy Murray, the mother of British tennis number one Andy, on her son's climb up the world rankings yesterday.

The young Scot from Dunblane has made a massive impact on the tennis scene in recent years and beaten notable players, including Roger Federer, Lleyton Hewitt and Andy Roddick.

The Queen, who is patron of the Lawn Tennis Association, was opening its new training facility in Roehampton in south-west London when she met Judy Murray, who is recognised as one of the UK's best coaches, and asked about her youngest son's progress, adding that she thought his latest quarter-final victory over Andy Roddick in the Sony Ericsson tournament in Miami was "very good".

Ms Murray spoke of the success of both her sons, saying that now Andy and doubles expert Jamie were both in the top flight they could travel to matches together and it made it easier for her to keep up with them.

She said of her son's victory over Andy Roddick, the former US Open champion: "Andy's wanted to be in the top 10 tennis players in the world since he was a young boy, so getting close to it is great news for him."

She said that now the two boys had their own coaches she was free to concentrate on her own career and will resume coaching the best eight to 12-year-old players in the UK and hopefully help find new players to follow in her sons' footsteps.

She has a strong commitment to Scotland and has been working to bring on the country's best youngsters.

"I want to help youngsters in Scotland and help them become better players," said Ms Murray. "I would like to work with Scottish players and maybe take some of them down to Roehampton to help them improve their game."