The Coldstream Guards Band played a rendition of Happy Birthday during the changing of the guards ceremony at Buckingham Palace.
Giles McNeill said:
"I was very proud to see the union flag flown on the flag pole at the Old School, Mill Hill in Nettleham this morning in her honour. God save the Queen."The Queen has two birthdays, with her actual one coming on 21 April and her official one being held in June, celebrated with the Trooping the Colour parade.