Prince Harry

The pair confirmed their engagement in November and said the service would be at St George's Chapel, Windsor Castle.

The date breaks with tradition as royal weddings usually take place on a weekday - the Queen wed on a Thursday and the Duke of Cambridge on a Friday.

The wedding will be on the same day as the FA Cup Final, which Prince William normally attends as FA president.

The time of the match has yet to be confirmed, but in recent years it has taken place at 17:30 GMT.

Excited crowds cheered as the couple greeted well-wishers ahead of a visit to a World Aids Day charity fair hosted by the Terrence Higgins Trust.

They split up to talk to people lining both sides of their route and were given cards, flowers and chocolate.

After the charity fair, they met head teachers at a nearby school.

Well-wishers gathered in the city ahead of the visit to catch a glimpse of the couple, including Helena Bottomley, Zoe Scott and Carole Bingham, from East and West Bridgford.

The couple posed for their first picture together after the announcement on Monday.

Asked if his proposal was romantic, Harry replied: "Of course it was," before leaving with an arm around his fiancée who showed off her diamond engagement ring to photographers.

Harry, 33, Queen Elizabeth's grandson and fifth in line to the British throne, and Markle, 36, best known for her role in the US TV legal drama Suits, got engaged earlier this month in London.

Bookmakers in the UK have suspended betting on another royal wedding as speculation heats up that a happy announcement is imminent.

Gambling company Ladbrokes closed betting that the couple would marry next year at odds of 4/6.

"All bets are off when it comes to Harry and Meghan walking down the aisle next year," Ladbrokes spokesperson Jessica Bridge told the Evening Standard.

"With the Duke and Duchess of Cambridge already expecting their third child, fans will be overjoyed at the prospect of two new arrivals into the royal family next year."

The star of US drama Suits told Vanity Fair the pair are enjoying "special" time together.

"We're two people who are really happy and in love," the 36-year-old said.

Markle revealed she and the prince had been in a relationship for six months before the rest of the world found out at the end of 2016.

There was a media frenzy when it was revealed Harry was dating the US star, the pair having met in July last year.

The pair were accompanied on Wednesday afternoon by Prince William's wife, Catherine, the Duchess of Cambridge, as they toured what had been known as the Sunken Garden at Kensington Palace in London, to mark two decades on from the death of their mother Diana, Princess of Wales.

"The engagement will allow the Princes to pay tribute to the life and work of their mother the day before the twentieth anniversary of her death," an earlier statement from Kensington Palace said.

The White Garden, at Kensington Palace, was planted to mark 20 years since Princess Diana died in a car crash.

The Duchess of Cambridge joined the princes on the garden tour.

A spokeswoman for Kensington Palace said: "The engagement will allow the princes to pay tribute to the life and work of their mother."

They met representatives from the causes and charities supported by Diana, including the Royal Marsden and Great Ormond Street hospitals, the National Aids Trust, Centrepoint youth homelessness charity and the Leprosy Mission.

In a documentary called Diana, Our Mother: Her Life and Legacy timed to coincide with the 20th anniversary of Diana's death in a Paris car crash on Aug. 31, 1997, the princes said they spoke to their mother shortly before she died.

Private moments

"Harry and I were in a desperate rush to say goodbye, you know, 'See you later' ... If I'd known now, obviously, what was going to happen, I wouldn't have been so blasé about it and everything else," Prince William said.

It was the first public outing for Prince Henry Charles Albert David of Wales and American actress Meghan Markle.

He said he wanted his children to grow up able to express their feelings.

Prince William has also teamed up with pop star Lady Gaga - in a video call they spoke about the importance of people talking about their struggles.

It comes after Prince Harry revealed he sought help after nearly 20 years "not thinking" about the death of their mother, Diana, Princess of Wales.

'Tipping point'