During her visit to the Ebony Horse Club, the Queen met our Senior Correspondent Ronke Phillips who is patron of the charity. She's seen first hand some of it's work and how it's changed the lives of some of London's children, including three of girls who took part in today's event.
The Duchess of Cornwall has given the Queen a tour of an inner city riding club which she has been supporting as President. The Ebony Horse Club in Brixton was created in 1996 to give disadvantaged children and teenagers access to horses and riding.
The Duchess of Cornwall joked about the cost of Coleen Rooney's wedding dress at a charity event today.
Camilla was speaking to charities about the importance of financial education at an event at Toynbee Hall, Tower Hamlets.
James Wilson, education officer at the charity, said: "The particular slide she spotted was Coleen McLoughlin, Wayne Rooney's wife.
"The question is 'how much does her wedding dress cost?' and it works out somewhere in the region of £5million, once she paid for it to be hand made and the diamonds."So she joked about just learning about being more sensible with your money."
The Duchess then visited the Bethnal Green branch of The London Community Credit Union, a not-for-profit community owned bank, which offers low cost credit personal loans and free money advice.
A Clarence House spokesman said Camilla was interested in the work of communities helping each other at a grassroots level, and in Credit Unions' financial awareness work.
The Duchess of Cornwall was presented with armfuls of gifts from traders, as she toured Borough Market.
Florist Sharon Crane, 45, whose business opened today, gave her first bunch of flowers to the Duchess for free.
Afterwards she said: "I told her 'I'm giving you a bouquet of flowers in case your husband forgets' and she said she was hoping to get some."
She was also presented with a massive chocolate heart, decorated with the words "with love from Borough Market".
But it seems Charles is having a rather less romantic Valentine's day. When asked by David Ruane, a worker from a nearby pub, if he'd received a card, he rolled his eyes and said: "No, I don't think so."
Today's journey was the first ever joint tube trip for Prince Charles and the Duchess of Cornwall.
Although both of them now qualify for an over-60s Freedom Pass, they were presented with commemorative Oyster cards topped up with £10 credit for the one stop journey from Farringdon to King's Cross.
A brand new train was used, which arrived at the platform empty. But members of the public boarded along with the royal couple - separated only by a group of policemen standing further down the carriage.
When the royal couple arrived at King's Cross they were taken to "Platform nine and three quarters", a Harry-Potter themed attraction in the station.
In the books by JK Rowling, the "Hogwarts Express" steam train leaves from a secret platform, which witches and wizards reach by pushing a trolley through a wall.
But Charles and Camilla remained firmly in the land of the "muggles" or non-wizards.