Watch: Queen cuts cake - with not a knife but a ceremonial sword
The Queen got a laugh when she decided to cut a cake with a ceremonial sword - determined despite her own disbelief.
The Queen, 95, was with her daughter-in-law the Duchess of Cornwall and granddaughter-in-law Duchess of Cambridge at the Eden Project in Cornwall, to celebrate the Big Lunch.
When it came time to cut the cake, the Queen was given a ceremonial sword by Edward Bolitho, the Lord-Lieutenant of Cornwall, though shed doubt on the idea of using it, saying: "I don't think it's going to work."
She was told: "There is a more conventional knife available" but Her Majesty quipped back: "I know there is, this is more unusual."
Camilla, 73, came to her aid, helping her with the unwieldy weapon, and the two women successful sliced the whole way through.
The Queen then used a knife to cut a second slice and remarked: "That looks very good."
The Queen also charmed world leaders when she hosted an open air engagement in the Eden Project alongside the Duke and Duchess of Cornwall and the Duke and Duchess of Cambridge.
During the family photo at the evening reception, she asked: "Are you supposed to be looking as if you’re enjoying yourself?"
The leaders around her laughed and Boris Johnson replied with an emphatic "yes".
Johnson, who is hosting the summit in Cornwall, added: "We have been enjoying ourselves – in spite of appearances."
Germany's Angela Merkel walked over to the Queen and thanked her for posing for the picture, saying: "Thank you for doing that for us."
Watch: G7 summit: Queen charms prime ministers and presidents
During the Big Lunch reception, the three royals, in a rare joint appearance, spoke to various guests who had been invited because of their work during the pandemic.
The Big Lunch scheme gets neighbours and communities together but has had to be held online in because of COVID-19. However in 2022 the Big Lunch will be part of the Queen's platinum jubilee celebrations.
Peter Stewart, executive director of the Eden Project, said the Queen talked about "communicating over Zoom and so-forth" due to coronavirus.
"She was talking about the fact she usually meets world leaders and she hasn’t met them for two years and she brought that back to the importance of everyday life and getting to know our neighbours."
Stewart, who introduced some of the guests to the royals, said: "There was a moment where Her Majesty was talking to a lady called Irene Rowe, who was a care worker for 20 years and caught Covid and recovered and has returned to work.
"She came home and gave COVID to her husband, who sadly died. She asked Her Majesty how she was and gave sympathy to her for losing her own husband, the Duke of Edinburgh."
Rowe, 65, from Helston, spoke to the Queen and Kate about the death of her husband Malcolm, 62, in February this year.
Rowe, a grandmother of eight, said she asked the Queen how she was coping after Philip's death and said: "I said you have been the same – you’ve just carried on like I have."
She added: "I said you have to carry on. I have good work, friends and family. People have been very kind.
"Kate touched my arm when I told her about my husband and said ‘oh no’.
"She was really caring and very nice, they both were.
"She asked if we got to see him in the hospital and I said we couldn’t, we weren’t allowed to."
The Queen lent her soft diplomacy support to the G7 events ahead of a busy weekend, as she prepares for her Trooping the Colour celebrations on Saturday and a meeting with Joe Biden on Sunday.