Zara Tindall appears to have stepped into a more visible position within the Royal Family while continuing to maintain the independent lifestyle and successful equestrian career that has defined her life outside official royal duties. As she turns 45 today, the daughter of Princess Anne and niece of King Charles remains unique among her relatives. She holds no royal title and has never been a working royal.

That decision was made by her mother at the time of her birth in 1981 and has allowed Zara Tindall to grow up free from formal royal expectations and instead pursue a successful career in equestrian sport. Despite this, Zara has remained closely connected to the royal circle and a regular presence at major family occasions.

In recent years, however, she has taken on a more noticeable supporting presence at select engagements hosted by the younger generation of royals. One example of this evolving role has been her repeated involvement in assisting Prince William at Buckingham Palace garden parties.

Over the past three years, she has been seen helping the Prince of Wales greet guests and welcome crowds, a task usually reserved for senior working royals. At a recent garden party held last Friday, Zara stood alongside William as guests arrived and engaged warmly with attendees.

At the same time, Zara has not moved towards any formal royal position. She continues to balance family life with her husband Mike Tindall and their three children alongside her professional commitments, including equestrian work and commercial partnerships, The Mirror reports.

Royal expert Jennie Bond told The Mirror: "Let's face it: Zara has nailed it. She seems to have a wonderful life with a husband she adores, three gorgeous children, freedom to earn a very good living - and a wonderfully warm relationship with her royal relatives.

"She is great fun, hugely popular - and scrubs up impressively well when she's not in her jodhpurs and boots (and she looks pretty good in those too!). Zara is a natural beauty and everyone who meets her says she's incredibly down to earth.

"She's a star at royal garden parties - which is why she keeps getting asked back - and brings a relaxed sense of fun to every conversation.

"She and her husband, Mike, remain very close to William and Catherine and I'm sure they will both be called on to help out at events like garden parties for many years to come. In many ways, Mike is like the brother William has lost in Harry."

She added: "I don't think there's any question of Zara becoming - or wanting to become - a full-time working royal. Why would she want the restrictions that would be imposed when she has such a great balance between lucrative work opportunities and the glamour of being part of one of the most famous families in the world?

"I'm sure she would be brilliant at being a working royal, but she is forever grateful to her mother for refusing a title for her and paving the way for the freedom she now has.

"So I think we can expect to see Zara popping up every year at events like garden parties, throwing her arms around her uncle, the King, at occasions like Royal Ascot, and being part of the family celebrations at Christmas. But I don't think there's any prospect of her swapping her 'civilian' life for one bound by royal duties."

During her time as a royal correspondent at the BBC, Jennie Bond reported on some of the most significant royal events of the modern era, including major state occasions, royal weddings, and periods of public scrutiny surrounding the monarchy.

After leaving the BBC, Bond has become a familiar media commentator providing expert comments on all things royal providing expert analysis on the Royal Family.