After four days of Diamond Jubilee celebrations, it's back to work for most of us today. 

But for the Queen, there's more to do. 

She's hosting a lunch for Commonwealth Heads of Government.

Meanwhile - Buckingham Palace says The Duke of Edinburgh will remain in hospital for a few more days yet. 

90-year-old Prince Philip is suffering from a bladder infection.

Yesterday Prince Edward visited him in hospital and said his father was "feeling better".