It's getting serious for Peter Phillips and his new NHS nurse girlfriend Harriet Sperling as he introduces her to the King, Queen and Princess Beatrice - after packing on the PDA at Royal Ascot

Peter Phillips and his girlfriend Harriet Sperling packed on the PDA on day four of the Royal Ascot - as they shared a smooch right before meeting with the King and Queen. 

The loved up couple was pictured kissing as they attended the equestrian event in Berkshire today.

Princess Anne's son, 46, had embarked on his new romance with Harriet, who is an NHS nurse, just weeks after separating from his partner of three years.

In May, the couple spent the weekend together at the Badminton Horse Trial where they were spotted strolling hand in hand.

And the pair didn't hold back on affections this afternoon either as they were snapped leaning into one another and sharing sweet glances. 

The King appeared to be high spirits as he spoke with Harriet - who laughed as she met the monarch

Camilla and Harriet appeared to be in deep conversation as they chatted with one another today

Peter Phillips and his girlfriend Harriet Sperling packed on the PDA on day four of the Royal Ascot as they shared a smooch

Peter's girlfriend also snapped photos of other guests as she enjoyed the outing on day four of the Royal Ascot

Harriet appeared to be in high spirits as she stuck her tongue out during a chat at the event today

Peter, who is the nephew of King Charles, opted for a dapper ensemble in a black suit and pinstriped trousers.

He also donned a beige waistcoat, pink button-down and lilac tie - perfect for the sunny summer weather.

Elsewhere, Harriet was elegant in a pastel pink dress with bow detailing along the front, accessorised with a matching headpiece.

After an affectionate peck with her boyfriend, Harriet was spotted enjoying an animated chat with Queen Camilla. And it seems Peter's family are keen on his new romance, as his cousin Princess Beatrice was also snapped giving her a warm hug and kiss on greeting.

Royal Ascot, the jewel in the crown of the UK racing calendar, started on Tuesday with the Queen Anne Stakes and will run until Saturday.

This year's meeting will have an overall prize-money pot of £10million. This is a record amount for Royal Ascot. The minimum winnings for all eight Group 1 races will be £650,000.

It was founded by Queen Anne in 1711 after she declared Ascot ideal for 'horses to gallop at full stretch' and has today become a major social event as well as a sporting attraction.

For the first time in its 313-year history, Ascot Racecourse announced this year the appointment of a creative director. 

After an affectionate peck with her boyfriend, Harriet was spotted enjoying an animated chat with Queen Camilla

And it seems Peter's family are keen on his new romance, as his cousin Princess Beatrice was also snapped giving her a warm hug and kiss on greeting

The couple huddled closely together, and packed on the PDA as they enjoyed a day at Royal Ascot

Peter and Harriet were both snapped in the grandstand. An animated Peter chatted with other guests 

The couple appeared to be in high spirits as they enjoyed each other's company during the event

Peter was in high spirits as he grinned and chatted with Harriet, alongside other guests at the event

Harriet and Peter looked to be delighted in each other's company as they enjoyed a day out at Royal Ascot

The couple were very tactile, as protective Peter put his hand on the small of Harriet's back during their outing

Harriet and Peter held hands as they enjoyed today's outing, looking very loved up during the event

The couple appeared smitten as they made their way through the crowds while enjoying Royal Ascot

Harriet and Peter during day four of Royal Ascot at Ascot Racecourse, enjoying the sunny weather

The couple couldn't get enough of  one another with gentle touches all throughout the day at Royal Ascot

Peter popped some shades on to keep the sun at bay as he chatted to his girlfriend Harriet today

Harriet and Alice were all smiles as they packed on the PDA - including gentle touches and holding hands

The loved-up pair basked in the sun as they enjoyed their outing on day four of the Royal Ascot today 

Harriet and Peter were holding hands as they attended day four of the Royal Ascot together today 

Princess Anne 's son, 46, had embarked on his new romance with Harriet, who is an NHS nurse, just weeks after separating from his partner of three years

The couple were all smiles as they huddled with one another for the event in Berkshire on Friday

The loved up couple was pictured kissing today as they attended the equestrian event on Friday

In May, the couple spent the weekend together at the Badminton Horse Trial where they were spotted strolling hand in hand. Pictured at today's event

And the pair didn't hold back on affections today either as they were snapped leaning into one another and sharing sweet glances

It comes as, earlier this year, Harriet spoke candidly of her struggles as a single mother.

She opened up about how she and her daughter survived 'against the odds' as they 'journeyed 10 years with only each other' while she juggled parenting with working on the NHS frontline as a paediatric nurse specialist.

Harriet, who is also a freelance writer, penned a heartfelt piece in Woman Alive in March, revealing the extraordinary bond developed from 'the unique relationship between a single mother and her child' which was 'forged in the fires of struggles and victories'.

She admitted: 'I liken us to an island and it has often felt hard to imagine anyone joining that island.'

Harriet told how she took strength from her Christian faith as she battled through the early years when 'resources were scarce, and the future was uncertain'.

In May, Harriet and Peter appeared 'smitten' as they shared a kiss and rarely left each other's side as they joined Queen Camilla and other senior royals at the Badminton Horse Trial.

Peter, who is the nephew of King Charles, opted for a dapper ensemble in a black suit and pinstriped trousers

Elsewhere, Harriet was elegant in a pastel pink dress with bow detailing along the front, accessorised with a matching headpiece

Peter and Harriet were pictured happily mingling in the crowd at the Badminton Horse Trial on both Saturday and Sunday

Divorcee Peter, who is 18th in line to the throne, split from his partner of three years Lindsay Wallace, 43, just months ago.

Harriet is said to bear a striking resemblance to both Lindsay and Peter's ex-wife Autumn Kelly, 46.

He and Canadian-born Autumn - mother to their daughters Savannah, 13, and Isla 12 - announced their engagement in 2007 and wed in 2008. 

But in February 2020 they confirmed they had split the previous year.

Harriet and Peter, who was the late Queen's favourite grandson, are said to be in the 'early days' of their relationship after meeting recently.

But it is being seen as a significant development that Harriet was invited to such a high profile event where they made no attempt to hide their affection for each other.

The trials - which were also attended by Peter's sister Zara Tindall, 42, and her husband Mike Tindall, 45 - is a popular tradition for members of the royal family who sometimes compete in the games themselves.

In 2010, Harriet was a key member of a team of medics, doctors and clinicians who helped save the life of a critically ill baby named Phineas after he was struck down by a deadly virus aged just three weeks.

Divorcee Peter, 46, split from his partner of three years Lindsay Wallace, 43, pictured, just weeks ago

She featured among a unique tribute created by Phineas' photographer father Michael Cockerham.

Phineas' life lay in the balance after he contracted a mystery illness that his immature immune system couldn't fight off.

Harriet and her team immediately began to work on the critically ill baby as he was transferred from Darent Valley Hospital in Dartford, Kent to the world famous Evelina Children's Hospital in central London.

Describing her response she said:  'Just 20 minutes after receiving the call to collect Phineas, the retrieval team were on our way in an intensive care ambulance.'

It emerged Phineas had been struck down by a common, but rarely diagnosed virus.

The King cut a dapper figure in a pale grey morning suit with a pink waistcoat, and Queen Camilla matched the monarch in the style stakes, wearing a light blue suit and a statement feathered hat at Royal Ascot on Friday

 King Charles offered a wave of his black top hat as the first carriage made its way through the spectators

The royals have enjoyed the summer society staple all week, and looked to be ready for another flutter on Friday afternoon

After a week of 'hoping and waiting', Phineas recovered thanks to the 'tireless efforts' of Harriet and the 62 other medical experts who treated him.

As a tribute Michael took photographs of every member of the 63-strong team which were published in a book.

Michael, who went on to become a fundraising ambassador for the hospital, said: 'I never want to forget the people who fought to save my son. And I wanted to highlight the huge team involved in his care, to show the enormous number of medics needed to save a life.'

Elsewhere today, the King and Queen enjoyed a Royal Ascot bathed in beautiful sunshine as they led the latest carriage procession on the penultimate day of the summer society event. 

Charles and Camilla looked in fine form as they waved at spectators, travelling alongside Lord and Lady Bamford in the first carriage. 

Charles, 75, cut a dapper figure in a pale grey morning suit with a pink waistcoat, and Queen Camilla, 76, matched the monarch in the style stakes, wearing a light blue suit, with her statement feathered hat being caught by the afternoon breeze. 

The couple were closely followed by Princess Beatrice and her husband Edoardo 'Edo' Mapelli Mozzi and Lord and Lady Frederick Windsor, who travelled together in the procession. 

And former Prima Ballerina and Strictly Come Dancing star Dame Darcey Bussell, wearing a striking shade of magenta, also enjoyed a ride to the royal enclosure, alongside her husband Angus Forbes.