Late Queen's 'favourite grandson' Peter Phillips, 46, splits from 'rock solid' girlfriend Lindsay Wallace after three years: Friends say Princess Anne's 'incredibly busy' son was 'travelling all over the world' for work

Peter Phillips has split from his 'rock solid' girlfriend Lindsay Wallace after three years together.

Princess Anne's son, 46, - who was said to be the late Queen’s favourite grandson-  started dating his old friend, 43,  following his divorce from Autumn Kelly, 45, in 2021.

The pair have now gone their separate ways after the relationship 'ran its course', a source told the Sun. 

Peter and Lindsay, an oil tycoon's daughter,  are still amicable, with no one else believed to be involved.

Lindsay has been to various royal events with Peter, who is very close to his uncle, King Charles.

Princess Anne 's son, 46, started dating his old friend following his divorce from Autumn Kelly , 45, in 2021

Princess Anne 's son, 46, started dating his old friend following his divorce from Autumn Kelly , 45, in 2021. The pair are pictured together at Epsom in June 2022

Peter and Lindsay are pictured talking to Princess Anne at the Platinum Party at the Palace in front of Buckingham Palace

'They were friends before their relationship blossomed. But Peter and Lindsay have gone their separate ways as the relationship simply ran its course,' a source told the Sun.

A friend of the couple added to Hello! that Peter's work commitments means he's been travelling 'non-stop'. 

'Peter and Lindsay made the difficult decision to separate as they were spending less time together with work and family commitments. Peter's business commitments and work in F1 meant he has been away and travelling non stop,' the source said.

'It obviously came as a shock as most people thought they were absolutely rock solid, it's very sad. Peter has been travelling all over the world and has been incredibly busy and Lindsay is based up in Scotland, so it's been hard for them to see each other.'

The late queen's grandson, who lives on his mother's Gatcombe estates, does not get money from the royal grant and works as head of partner acquisition for the rights agency CSM Sport & Entertainment and as an ambassador for ISPS Handa, as well as various other endorsement gigs.

 Mother-of-two Ms Wallace, left, is a close friend of Zara (right together) from their days at £45,000-a-year Gordonstoun and was invited to the royal's wedding. She is separated from her husband but not divorced

Lindsay was pictured laughing and cheering (at the back wearing a cream-coloured top and a pink hat) at Zara's wedding to rugby star Mike Tindall in 2011

Finally, she joined him at the Platinum Pageant - marking the third outing together 

Peter Phillips, Lindsay Wallace and Sophie, Duchess of Edinburgh are seen during the Coronation Concert in May

The mother-of-two joined Peter at both Wimbledon and Ascot (pictured), as well as the Coronation concert

In June, a friend of the King's nephew told Hello that Peter has always been 'extremely close' with Charles and that 'it meant a lot' that he was able to bring Lindsay to the Coronation concert.

The source told the outlet: 'He is in a great place at the moment and could not be happier in either his private or personal life.'

The friend added the pair look 'so natural' in each other's company, adding they are 'incredibly happy' together.

'Lindsay really is a breath of fresh air and it's clear to see both Lindsay and Peter are loving life,' the friend continued.

Peter and Canadian-born Autumn announced they were separating in 2020, with the divorce finalised in 2021. They share two daughters, Savannah, 13, and Isla, 12.

Meanwhile, stay-at-home mother Lindsay parted from businessman husband of 11 years Andrew, at around the same time last year that Peter announced his divorce.

Peter and Autumn Phillips on their wedding day at St George's Chapel in Windsor on May 17, 2008. They have now separated. The couple sold pictures of their 2008 wedding to Hello! Magazine for £500,000, causing outrage within the royal family

SOLO OUTING: Peter Phillips was spotted chatting to his sister Zara and the Duke and Duchess of Sussex at St Paul's Cathedral. He attended the Service of Thanksgiving without Ms Wallace

Autumn is still has a good relationship with some members of the family. In the summer, she was pictured at a charity golf tournament with Zara, Peter's sister.

Meanwhile rumours of a romance between Peter and Lindsay first emerged when he made a visit to see her in March 2021 - raising questions around whether he had broken lockdown restrictions.

Eight months later, he showed he was serious about his new relationship when he brought Lindsay as his date to his nephew Lucas's christening.

The couple were photographed in a car together ahead of the gathering.

Peter, the eldest child of Princess Anne and her first husband Captain Mark Phillips, then took the highly significant step of introducing Lindsay to his late grandmother Queen Elizabeth II, who was said to have been 'delighted'.

Lindsay was introduced to Her late Majesty at a shooting party at Windsor and the encounter was described as 'warm' by a source.

A spokesman for Mr Phillips confirmed at the time that Lindsay had accompanied him to the joint christening of Zara and Mike Tindall's son, Lucas, and Princess Eugenie and Jack Brooksbank's son, August, in Windsor.

Lindsay, a mother-of-two, knows Mr Phillips and his sister, Zara, from their school days at £45,000-a-year Gordonstoun.

Peter Phillips and Lindsay Wallace attend the fifth day of Royal Ascot in 2022

Peter Phillips reflected on the time he spent with the his grandmother, the late Queen Elizabeth II, in Scotland before her death on 8 September 2022

Lindsay, who has also split from her husband, was in the same year as Zara at school, which was also attended by Charles. 

She was among the guests at the royal's 2011 wedding to rugby star Mike Tindall. 

The mother-of-two joined Peter at both Wimbledon and Ascot, as well as the Coronation concert. 

But Peter appeared to be without Lindsay at the Bahrain Grand Prix at the start of March. 

Despite being entitled to a Prince title at birth, Peter and his sister Zara do not have titles as his mother wanted him to have as normal a live as possible.

Last month, Peter  has opened up about the final moments he spent with his late grandmother, Queen Elizabeth II, in Scotland. 

The royal said he was 'lucky to be in Scotland before she passed' on 8 September 2022.

In an interview with Sky News Australia, Peter reflected on the 'few days' they shared 'as a family', describing that time as 'really nice'.

'Looking back on it, it's still quite emotional, that part was a proper family moment,' he revealed.

'And then obviously when she left Balmoral it became more of a public grieving.

'In many ways we'd had our quiet moment with her, we'd said our goodbyes, so whilst it still wasn't particularly easy, it was easier to be able to share the public's grief for her.'

Peter credits his grandparents, the late Queen and the late Duke of Edinburgh, with teaching the rest of the royal family how to behave

Peter, a businessman, described the late Queen as 'remarkable in so many ways'. 

Highlighting that 'she was a figurehead that had been part of everybody's lives for as long as people could remember', he also spoke from a personal perspective. 

'Having her as a grandmother and a role model was unique', he said.

Reflecting on the imprint that the monarch and the late Duke of Edinburgh left on all the members of the royal family, he credited his grandparents with teaching them how 'to grow up and behave'. 

Peter implied that he shared a close relationship with his grandparents, explaining that the fact they were around for a significant part of his life has led to 'a greater connection, a greater respect and a greater ability to be able to learn from them'.

He talked fondly of the time he and his cousins spent with Queen Elizabeth and Prince Philip, sitting together and talking about their lives, adding that it was 'fascinating because it was a different part of history'.

Moving on to King Charles III, Peter complimented his uncle on the way he had handled the transition, holding onto much of what his parents had put in place while also making his own mark. 

Pictured: The late Queen Elizabeth, Princess Anne and her children all together in Windsor in 1985

Pictured: Prince William, Prince Harry and Peter Phillips arriving for Committal Service at St George's Chapel in 2022, after the Queen passed away

Commenting on King Charles's reign, he added: 'I think that's probably the greatest testament to both of them – that he's doing things his way but very much with a nod to the way that they always did it and the core of what they taught us.'

Earlier in the interview, Peter also spoke about his relationship with his mother, Princess Anne, who he described as 'hugely influential' to both himself and his sister, Zara Tindall. 

He seemed especially in awe of his 73-year-old mother's work ethic, which, according to Peter, stems from his grandparents, who were both working well into their nineties. 

Peter discussed the Princess Royal's fondness for being with her loved ones amid a hectic schedule which sees her turning around 'overseas trips in 24 hours'.

The King's sister - who is often called the 'hardest working royal' and carried out 457 royal engagements in 2023 - has been dubbed 'remarkable' by her eldest child. 

'Her mindset is "listen I can go in do what we need to do and come back"' he told the programme.

'She really values her home time and values her time with Tim and the family and the dogs and the horses and that's a really important part of the structure of her week.

'To be able to actually relax and just get to get to some form of normality.'